I think I might transition to appendix carry for when I need to IWB instead of OWB.
It is surprising to me. I'm from the "Appendix carry? Are you crazy?!?" era. However, I've been watching a lot of the gun channels on youtube lately. It seems that almost every one of the guys that are bona fide trigger pullers with the creds to prove it do appendix carry. At first I thought maybe one or two of them were just being weirdos, but as I watched more of them ,and their trigger puller guests, everybody was doing appendix.
I started watching more appendix carry specific videos, and for the last few days have been testing it out with an Aliengear IWB and an empty P365XL. Doing my normal routine around the house, practicing draws, etc., I am finding it more comfortable than most of my IWB carry, which is at 8-9 o'clock. That includes sitting down, which I thought would be a big issue. The only thing it seems to do is make me have better posture and not slouch. It's also a faster draw. Not faster than OWB for me, but definitely faster than my regular IWB.
I'm not fat, but also don't have anything near a washboard. I like to think I could lose 10lbs. Still, it seems to be working for me, at least with the P365XL. I expect, from what I have read and watched, that something like a 1911 would be less comfortable. I would like to try it with maybe my FNX-9 or my CZ P01 Omega, though my current IWB holsters for those two guns are probably not ideal. The Aliengear holster is very comfortable and seems to give some cushion between me and the gun. This also seems to work best with an instructor style belt.
Anyway, I was surprised (both at its popularity and that it seems to work for me) that I liked it. I still like OWB the best, but this seems to work well for me, and also seems to cover the gun much better than my normal IWB carry style. Which is important, because about the only times these days that I IWB is when I need to make sure concealed means concealed. I was surprised at that too. I thought I would look like I had a massive goiter, but there's really no printing with a regular t-shirt, unlike 9 o'clock IWB for me.