I don't usually wear one unless I'm in my band uniform or playing a gig, and even then not if I'll be going somewhere like a school to do a presentation. To me it's more of a costume piece, and I don't consider myself to be wearing a costume when I'm wearing a kilt. I carry a Swiss army knife for practical use. I do wear it when I play a gig because people want the image of a piper as much as the music, so all the paraphenalia is expected.