I carry a gentleman’s short pocket knife. Assisted opening, by Kershaw. Very understated. I use it 5 times a day for small tasks.
But if you come at me, you’d better have a gun, because you’ll be sliced to ribbons before you touch me.
I’ve had a pocket knife since I was a kid. Probably had dozens of them since then, but never without one. I’ll sharpen the one I have now with a stone every now and then. Sharp as a razor.