I've OCed at the Walmart and at that pizza shop a little to the west across from the car dealership in that little mini mall. I know they noticed at the pizza place, but no tells at WM. Everybody has their nose stuck in thier phone, and I was a fast mover getting my grub and ammo. I guess the guy at the ammo counter noticed. It's been a while. Used to stop there going east waiting for my logbook to catch up to me before crossing the scale.
I used to stop at all the Walmarts looking for 9mm during the "shortage". They seemed to have it or I hit it on the right time. Park City, Utah always had .40 but never any 9.
New job, no firearm in the truck here, but home almost every night. I'm uncomfortable now when I'm unarmed/not OC. It takes a while, the more you do it the more you realize people just don't notice and the LE pretty much don't care as long as you are minding your own business. I'm out and about taking care of business while armed, not standing on the corner trying to be noticed. Not saying there isn't a time and place for that, just not me, right now.