Blog · Everyday Carry

What's in My LOCHBY Quattro Pen Pouch for Everyday Carry

Here is what I keep in my LOCHBY Quattro pen pouch and my Venture Pouch of extended stationery, plus the redundancies I want to fix.

Luis Duque, PE · September 26, 2026 · 8 min read

LOCHBY Quattro. Olive fabric pen case open in hands; LOCHBY tab; pens in elastic slots. — LOCHBY Quattro

I've been switching my pen pouch setup around, so I want to walk through what I carry now and the changes I'm considering.

Watch the full video for everything shown on camera.

Short answer: the LOCHBY Quattro holds the pens I use every day, four fountain pens up front plus accents and a hidden ballpoint. The LOCHBY Venture Pouch holds the extended stationery.

The current setup

My main pen pouch is a LOCHBY Quattro, and I'm debating whether I need a few of the pens in it. I see some redundancies, and I want to fix them.

I also carry another LOCHBY product, the Venture Pouch, quite a bit.

It holds my extended stationery: things I may not use every day but would like to have with me more often than not.

Where	What I carry	Why it stays
Quattro, front	Four fountain pens: green, black, purple, and blue ink	The pens I use the most
Quattro, accents	Microns, a mustard yellow Zebra Sarasa Clip, a green Sarasa Grand, a Mildliner, a Tombow Fudenosuke	Headers, color, and line variety
Quattro, its own pocket	A ballpoint with a Uni-ball Jetstream insert	For when a ballpoint is the right tool
Pocket	Big Idea Design bolt action pen with a Muji 0.38 insert	Comes in and out of the pocket
Venture Pouch	Tombows, a Sharpie, a folding ruler, a LAMY mechanical pencil	Drawing, marking, and sketching

The four fountain pens

I'll start with the LOCHBY Quattro, because it's the pouch I carry the most. It currently holds four fountain pens.

The first is a Kaweco Sport in the Olivine colorway, which I've shown in several videos before. It writes beautifully.

Kaweco nibs are some of my favorites, and this pen is filled with Kaweco Palm Green ink.

The second is my Traveler's Company fountain pen, which I've also shown quite a bit. It has black ink and is my everyday writer.

The third is a TWSBI Eco with purple ink, just a fun color to have.

The fourth is a special edition Montblanc, filled with Diamine Oxford Blue, that I've carried for quite some time.

That gives me blue, green, black and purple ink, and I can see some redundancy in the lineup.

Best for daily writing: the Traveler's Company pen with black ink. The other three are there for color.

The accents

A little while ago, I added a hunter green Micron 0.5 to the Quattro, thinking I would use it for headers. I have used it, but I'm not sure yet whether it will stay.

For another fun color, there's a mustard yellow Zebra Sarasa Clip that I've used in the past.

It gives me a different color for writing.

There's also a green Sarasa Grand from the vintage collection. It's a super nice pen and writes beautifully.

Rounding out the accents are a Mildliner and a Tombow Fudenosuke, in case I want to do some lettering or need a thicker line.

The hard-tip Fudenosuke draws both thick and thin lines, which gives me more variety. That flexibility earns it a spot.

The pocket pen

Another pen I carry a lot is the Big Idea Design Base Line bolt action pen.

It's my everyday carry pen. It goes in and out of my pocket as needed and also rides with my Mini Field Journal from LOCHBY, so it definitely stays in the lineup.

I put a Muji 0.38 gel refill in it, trimmed to size.

You probably can't do this with every pen that takes Parker-style refills. The beauty of this bolt action pen is that the mechanism inside is just a flat surface, and the only thing that moves up and down is the bolt.

That means I can put in almost any refill, as long as it's the correct length.

The tip also has enough room for the Muji refill's shorter nose.

It's a really versatile pen, and I've enjoyed using it and trying new refills in it.

Because of it, I've been able to retire the Muji 0.38 gel pen I kept in the Venture Pouch for a long time as my fine-line pen.

Best for pocket carry: the bolt action pen, because it takes almost any refill of the right length.

The ballpoint and the red Micron

I also carry a ballpoint pen, which I think is essential. Sometimes you just need a ballpoint.

It lives in its own pocket in the Quattro, so I don't even see it when I don't need it.

It has a Uni Jetstream refill, which writes beautifully.

Tucked in that pocket, it almost hides, but it's there when I need it.

As for the hunter green Micron, I enjoy being able to write headers with it, but I already carry green ink in the Kaweco and the green Sarasa Grand.

So I'm debating whether a red Micron would serve me better, since the Quattro has no red ink at all. I'm going to give that a try.

That way I'll have red if I need to mark something up.

Best for mixed writing: fountain pens up front, and a ballpoint for when a fountain pen is not the right tool.

The LOCHBY Venture Pouch

The Venture Pouch is where I carry my Tombow markers, and I want to add a yellow and a green to the set.

I used to carry a Muji 0.38 gel pen in the Venture Pouch, but the Big Idea Design bolt action pen I carry now has the same Muji refill, so I don't need it there.

A Sharpie could take its place. I don't use one much, but every now and then it's nice to have.

Something else that may be missing is a straight edge, so I added a clear ruler that folds in half, which makes it easier to fit in the pouch.

A mechanical pencil may also be worth adding, since I don't currently carry one.

The one I chose is a 0.7 LAMY mechanical pencil I've had for quite some time. Its construction is solid.

I also have Pentel pencils that write well, but they feel more plasticky, and I don't enjoy them as much as the LAMY.

What stays

I use the Tombows for drawing, sketching and filling in things I've drawn with the Microns, which is why I keep them handy.

I've also found that a size 12 Micron works as a Sharpie replacement when I just need black and a thicker line. It's not as versatile as a Sharpie on different surfaces, but it does the job super well.

The Quattro and the Venture Pouch go hand in hand, and I keep both close. The Quattro is the more comfortable carry. It almost fits in a pocket if I really need it to, but I always carry it in a bag.

It lets me have everything I need in one compact pouch.

I put the fountain pens up front because I use them the most. Everything else in the Quattro is an accent or a planning-specific tool.

Best for a compact daily kit: the Quattro. Add the Venture Pouch if you want drawing and marking tools with you too.

The gear worth a look

LOCHBY Quattro: the pouch I carry the most.
LOCHBY Venture Pouch: where the extended stationery goes.
Kaweco Sport Olivine: the green fountain pen up front.
Kaweco Palm Green Ink: the ink in it.
TWSBI Eco: the purple one.
Big Idea Design Base Line Bolt Action Pen: my pocket pen, with a trimmed Muji 0.38 refill.
LOCHBY Mini Field Journal: the notebook the bolt action pen rides with.
Uni-ball Jetstream: the insert in my ballpoint.
Zebra Mildliner Highlighters: the accent color in the Quattro.

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Frequently Asked Questions

What do you carry in the LOCHBY Quattro?

My LOCHBY Quattro holds four fountain pens, a few Microns and accent pens, and a ballpoint pen with a Uni Jetstream refill in its own pocket.

Why carry both the Quattro and the Venture Pouch?

The Quattro is the pouch I carry most, with the pens I use every day. The Venture Pouch holds extended stationery I may not use every day but like to have with me, such as Tombows, a ruler and a mechanical pencil.

Can the Big Idea Design bolt action pen take other refills?

Yes. The Big Idea Design Base Line's mechanism is just a flat surface with a moving bolt, so it takes almost any refill of the correct length. I use a trimmed Muji 0.38 gel refill.