I personally really don't worry about printing. I am pretty skinny yet I am able to carry a full size 1911 without issue.
The one time somebody spotted it-my T shirt rode up a bit and exposed the muzzle. The chick in line behind me asked me if I was a cop. I asked her "why, did you do something wrong?"
Now if somebody asks if it is a firearm I will tell them the truth.


As far as where you can and where you can't: in Colorado a private entity/property has the right to forbid firearms on their property.