Whether someone decides to OC or CC, it is an individual choice...case closed! As long as the individual is carrying in a manner that is most appropriate for them then its does not matter which he/she chooses. The only exception I would make to this opinion is if the person is OC'ing simply to attract attention to themselves. This would be IMHO the wrong motivation for being armed. The sole purpose for carrying a firearm is for protection not for intentionally attracting a reaction good or bad from others.