I do in the cold weather season due to its size, in a leather Galco holster.
But for those that want to during the summer season, here is a hint:
I have found that a leather zipup "day planner" works great for a CCW holster
Just gut out the calender inside and a FiveseveN with tac light will fit nicely in there.
The one thing that would suck is that since the gun is polymer (even on the slide), it might be harder to cover holster wear as it develops. A refinish job might not hide some serious polymer holster wear.
How is your finish holding up? Just curious.
Remember - this comes from a guy who hard chromed his slide, so there would be no holster wear.
I do not own an FN 5.7 but have guns that are comparable in size like the Sig P226,229, and the FNP9.. When I want to carry them and cannot wear a holster,as I am in workout type clothing all day, I use this product:
See the thing is all the day planner holster's I've seen, don't look like a "Office Professional" leather day planner.
I can usually spot those type of holsters dead on, its like being able to see soneone printing their CCW.
I have been using my Five-seveN as my CCW gun for about a year and a half now. I use a Kydex holster made by BladeTech and mine shows quite a bit of holster wear. I could care less because for CCW it becomes a tool for saving my life and not a safe queen. I am thinking of getting one in OD Green or Tan and installing a Doctor Optic for target use. That would be a safe queen.
I've been carrying the USG for about two years -Usually on the hip with a round in the chamber. If I'm carrying it in a pocket or bag I leave it unloaded (duh).
It's so light that I never notice it. But its size does effect it's concealability; I can't wear it on the hip with just a t-shirt.
When the walther PPS .40 is available I may switch. It will be a hard decision because I've practiced with the USG so much- everything about it is second nature to me now.
And I don't even where big ghetto pants! It actually fits in a regular carhart pocket with just the bottom of the handle protruding. If I put a bandanna (not banana ) in my pocket this conceals it. But when I wrote that I was actually thinking of the pockets in my heavy winter coats. -lots of room in those.
I carry mine strong side kidney in a Galco Concealable Model Belt Holster, underneath an untucked 511 Leisure shirt, or whatever they call them. I have absolutely no problems with concealability, and accessibility is pretty fast, as well. Man, I love this gun! A PS90 is only a few weeks away.
I just purchased PS90 USG and FiveSeveN IOM, both NIB, as a "package" deal three days ago, and already absolutely love both, in fact, so much that my usual "carry", Springfield XDM 40, is in danger of losing its "top dog" spot!
My main concern is also one of the greatest assets of FiveSeveN-- the round. Ballistics seem to show the 5.7 x 28 is "almost a 9 mm", and I wonder if this chambering is adequate for a primary SD handgun.