My every day carry is an Opinel #8 folder whether I'm in pants or kilted...it's sweet little knife, sharp as hell, and costs next to nothing. I take good care of it, but if I lose it or something disastrous happens I don't worry much. When kilted I just tuck it in my hose. Fortunately Washington has some pretty loose rules when it comes to open carry. I'd be more concerned with a traditional sgian, since I think it could be considered a dagger.