A couple of days ago I decided to go to local Wally-World after work. I can't carry during work days due to company policy (company property....), but generally like to carry at other times. The pants I had on weren't sized for IWB carry, so I put my DeSantis pancake holster on my belt with XDm .40 at kidney position, and untucked my t-shirt so I could cover it. It prints a bit, but not too bad.
No problem while shopping, but when I got to the register to pay, I realized that the bottom of the holster was almost competely obstructing my back pocket which is where my wallet was. There was some housewife yacking on a cell phone behind me in line, and there I was wiggling my wallet, pocket, belt, and "bulge" trying to covertly get the wallet around the holster for what seemed like 5 minutes (ok... maybe 30seconds) so I could pay. I finally got the wallet free and paid, without having to fully expose the holster/gun and no comments from anyone, so it was cool. However, I was miffed at myself for forgetting to switch my wallet to the other pocket while carrying with those pants.
Reminder to self: when carrying make sure wallet, keys, etc. are in pockets that are not obstructed by the holster or gun, so that 1) don't sweep fingers past muzzle to access pocket 2) don't have to mess with the holster/gun to pay at stores 3) can access ID for LEO's etc. without making a "drawing motion" near the gun.