IF you want to carry a tactical pen, fine. I have no problems with them. Carrying them onto an airplane, into a prison/courthouse or other restricted place, YOU may end up being the one with the problem, is all I am saying. Double edged belt buckle knives have been "discovered" too. Want to go all double naught spy? Sharpen an edge on your credit card, get a rolex with a garot, a kevlar trenchcoat, and a steel lined derby hat.