I know in Nashville as long as its visible your legal, so I guess a pocket knife is actually a concealed weapon. Heck you could walk down the street with a gun strapped to your leg, and as long as its visible you are within the law. ( Don't think I would push it that far) Just don't walk you pig in downtown Nashville, there is a law against that. Also there is a cop that comes to the pub I go to and he wears his, and has never said anything about mine. We are pretty much like our sister state Texas, as long as we have our guns, knifes and pickup trucks we're happy.