The funky Hawaiian print shirts warn over a t-shirt just scream gun. So I don't wear that style. I like my inside the waist band tuckable holster. It allows me to dress "normal"...whatever that means. I am guilty of half the stuff on that list at one time or the other.
The problem I have is that my pants will ride low on occasion and pulling them back up with a handgun in the way is tricky.