I've never noticed a gun on a non LEO before even though I carry and look for it. This guy was in his mid 50's, had a glock hat, one of those "badges" that are discussed a the top of the forum, and was wearing a vest. Needless to say, I looked for a gun right away. I saw the bottom of the kydex on his holster peaking out under the vest.
I was at work and it's a very non-firearm friendly place. I didn't want to say anything to him and I don't want my co-workers to even know I have a gun, much less carry.
Everyone around me didn't notice at all, even though it was quite obvious to me that he was carrying a gun. It was in our waiting room and the rest of the staff and people waiting were oblivious.
Just goes to show how unobservant most people are. I came away with more confidence that no one will give the slight bulge on my waist a second look, unless they are a fellow CCW'er. This, especially after yesterday's experience and how obvious it should have been for even a non-gun person to spot.