just a personal observation... my small circle of friends are mainly USPSA pistol and multi gun shooters, possessing the skills associated with fairly advanced levels of competition... with the increase of "workplace violence" I've noticed that several of them, who have had a concealed carry permits for a long period of time, but chose not to carry....now do so daily, and several, myself included, have opted for pistol caliber carbines, and AR style pistols, suitable for very close quarter interpersonal confrontations