I was checked going into a concert recently. They made me toss my 2" (unfolded) knife but let me keep my tactical flashlight that triples as a kubatan or nun-chuc. (And doesn't strobe)Flashlights also tend to not scare folks. A few years ago I worked with a guy who was shocked and just a wee bit fearful that I carried a discrete pocket folder, a light duty Benchmade. I could understand that he didn't expect a sophisticated urbanite like me to carry one of life's essential tools, but fearful? I consider that reaction to be worrisome.
Good thing I didn't have nail clippers too.