I'm cheap, and too many people give me shit for carrying my knives on me. You have to handle it prison like and learn to make yourself a shiv, something that you could pass off as a mundane object but also handle it as a cutter when need be. I keep a comb for that purpose; keeps my hair nice and I whittled the handle so I can stab someone at least four inches deep. Though I'd still prefer to carry my knife if I'm wearing my jacket, as it has pockets specifically for the purpose of hiding weapons on my person.