Ok, I'll throw in my two cents here. But please bear in mind, this is from someone who has been trying IWB and AIWB (yikes) on and off throughout the past 36+ years off of carrying very predominately strong side OWB...
I have more than a handful of IWB and AIWB holsters in my holster box- more than I care to admit. But I never found anything that really worked with my physique, especially for appendix carry...
But recently I sprung for a Gen4 VELO from Tenicor for my G43/43X. Incredibly, I found a holster that works for me. I carry comfortably at 12:30 with the VELO and despite needing to get used to having a holster and pistol in that location (bending, sitting etc...) I think this holster is a winner for me. I coupled the holster with a
https://vdevgru.com/products/megingj...y-belt-ver-3-0 AIWB specific belt (after all, the Graith Specialist is no longer available) and with some more work and repetition, I thing I've found something that works for me. YMMV