Way back in the day I had printophobia. I'm pretty casual about it now. If I'm out alone I take more care to do the things that Tuner described. If I'm out with the wife-family I care less b/c having clean cuttish people with you offers even more for people to look at than just me and we're easily profiled as a family out n about which is a type of camofflauge of its own.
When I was first learning to do the 'girlie stoop' I had more concern of if people thought I was gay than if they seem my gun! Then I realized that with the more & more acceptance of gays in general that effemminate body language like that may even profile me as a non threat in a way also. Not necessarily true but generally. No offense to anyone.
It's pretty easy to wade through a crowd with an elbow surrepticiously on the butt shifting to n fro to keep the weapon on the off side from people. Probably the worst thing is the 'Windy day pirouette (?)' so the tails/flaps dont fly up, feigning the 'oh no I've got a hair out of place' gestures when in fact I'm keeping the jacket down.
We was at a buffet one day and my jacket was just a little too much to keep on inside so I dropped it off my shoulders and let it remain around my waist still giving me coverage and spaced it, went to the line and got another platefull of food only to return to have my wife saying what're you doing? I realized what she meant and sat down. No one seen, cared, said anything. They were oblivious. I think the wife worries about me getting made more than I do.
I got escorted out of K-Mart (Nevada & Fillmore) one day for open carry because I wouldn't unholster it and drop the mag for the security guy. I understood, he understood. Nice guy doing his job.
The biggest trick for me (having no permission slip) is keeping it hidden from the sheeple and yet somehow being able to unconceal if mr po po is heading my way, without looking like I'm going for it or anything. I've a couple things I do which help me to accomplish it, nothing I want to put in print at the present time.
Po Po phobia ya know.
I like playing 'Spot the CCW' on people. It's hard. The only people I've spotted are older gents who are semi casual about it and the younger guys who aren't adept at it yet.