smores
Creepy-Ass Cracker
Correct. No permit required to OC. As long as the business doesn't have a "no firearms" notice at the door, you should be good to go. From my experience those signs are very, very rare. Here is a partial list of gun owner unfriendly businesses in which you would not be able to OC: http://www.vcdl.org/static/gue.html
I have seen the "No Berettas" sign on a BB&T bank door here in MD. Does that mean I can carry my Glock, Steyr, SIG, or CZ? I would if I could... "but the sign is clearly a picture of a Beretta pistol... and I don't have one!"