How many times have YOU ever noticed someone elses concealed handgun? Not many I'll bet. What makes you think anyone else pays any more attention to you, than you do to them.
This is one of my many habits which cause my wife to roll her eyes and sigh. If we are sitting down in a public place, watching the people go by, I tend to examine each person and try to "see the gun." Then I point them out to her. And she gives me "that look." So yeah, I agree. The average citizen is totally clueless that you are carrying a gun. Even if it prints along the belt line. They either totally don't see it at all... or they "assume" it is something else. Smart phone, Leatherman, some kind of tools, etc.