Carrying a piece daily, doing errands, also biking, walking, running offers different challenges for concealment. Also the desire not to sacrifice firepower/accuracy/handling etc for a more concealable tiny firearm that some have a tendency to treat as a magical totem that defends against evil is another issue.
Carrying appendix inside waist band 1 or 2 o’clock (I’m ambidextrous with handguns) I usually go up in pant waist and shirt size...also concealment is easiest with guayabera or hawaiian shirts. Would work for any belt carry position really with these shirts. Such a shirt with patterned design like flowing lines one could hide a very large pistol easily, normal printing is camouflaged and disappears. I had a plain guayabera today and hid a Glock 20 full size 10mm easily with shorts.
A thick wide belt is necessary. Loading pockets with items for myself can feel weighty, while in contrast securing items on belt line — mags, fixed blade, flashlight — one feels lighter. Of course it depends on what type shirt being worn as it effects concealability...too many items, too many potential bulges.
If moving around all day, driving car to stores, walking, back to car, etc do I want items jabbing me in back sitting in car seat? Typically I’ll go over a belt loop at the 7 or 4 o’clock position when putting on a belt to allow movement so the extra mag(s) carrier can be slid to the side of my body to comfortably drive. Exiting vehicle the mag carrier is slightly moved back behind the hip bone. I don’t want back issues from sitting against a mag or flashlight jabbing me.
With AIWB carry it’s always a trade off between speed of access and concealability. For example running I use Dale Fricke Archangel, mounted high, excellent retention with the body/leg movement. Can do sprints, no issue. It does print so extra large sport shirt worn plus I normally run at night. Also biking with AIWB is intrusive with leg position, so I carry at 9 o’clock OWB American from One Source Tactical hugs body closely under shirt.
Otherwise normally carry Blade Techs Klipt kydex types or Galco Sto n Go leather. The bottom line is if people carry daily you’ll need several different holster variations.
Another issue I’ve had with a compact or subcompact firearm, such as Glock 19 or 26, printing is an issue with tighter shirts for variation (summer heat, dressing up, etc ...not into wearing a bed sheet all day) Normal holsters with clip will print, depending on shirt design, etc. Going to a smaller pistol isn’t something I want. However last week I attended a summer fair in tight t-shirt and shorts, and successfully concealed Glock 19 AIWB with extra mag in pocket. It was a matter of using a blackhawk or uncle mike’s nylon holster, not using the belt clip but sliding the pistol down until the grip was even with belt. A deep carry, pistol disappears, though harder to access quickly. Really it’s a thumb grab and pistol flies into palm of hand as moving upward.
I’ve noticed the sticky holsters mentioned here and will try them, as I want an option for wearing tighter shirts on occasion and a holster without a clip should work for that deep deep concealment, just have to make sure belt is tight per usual for retention, and the holster isn’t holding onto the gun in a draw... holding a piece with a sock over it one would look like a darn fool.