Until recently, I would have wholeheartedly DISagreed with the argument that fannypacks don't advertise guns. However, there is this little old guy who comes into the gym with his wife (or girlfriend?) pretty regularly, and they both have fannypacks that they carry around with them in the gym (on the treadmill, lifting weights, etc.). You would have to admit that fannypacks at the gym are out of the ordrinary, and I certainly had noticed them and their gear several times before. But, it was just the other night that, for the first time, I put two-and-two together that fannypack likely equals firearm. I'm sure it's only my recent thinking about concealment that cued my attention. Up until that point, my thinking never went beyond "a fannypack at the gym...well, that's odd".
On a semi-related matter, one of the "family friends" of my in-laws is a LE officer. He and his family attend family gatherings with some regularity. Even knowing the nature of his employment, I had never thought even once about whether he was carrying a gun or not. Surely, he is carrying a gun, but it had never crossed my mind until the most recent family event, and then only because I was thinking about concealment issues. And you would think that having two LE parents, as I do, would put things like that somewhere in the forward half of my brain, but apparently not.
So, I'm convinced now that the argument that "out-of-sight is out-of-mind" really holds true.