I'm from Huntersville and see a few OC'ers one in a while. Once in Outback around August or last year. I OC to from the range for the past year and have not had one issue. Keep a good attitude and you should not have a problem.
I will suggest that you get a CCW when possible. There are sometime when out of sight is best. That way you have the option.
I can't speak for Charlotte as they consider themself very Metropolitan.Maybe somone else will speak up in regards to them.