Actually, I don't think it's that stupid of an idea at all. I would feel pretty safe with one as a defensive tool- no ammunition to run out of in a survival situation, and with a katana and some training, you have some incredible cutting power against some critter that insists you're part of the food chain. The thing that would be freaky though, would be if you got caught trudging through the woods with a sword strapped to your belt by law enforcement. Try to explain THAT away lol
"Oh, you mean THIS thing, officer? Well...see, um, I couldn't afford a machete. So, I, uh, bought the next best thing I could find at the fleamarket. Yeah, that's it. Ah ha ha ha." *cue nervous laughter*
I guess they'd rather find you with that than a gun though. Well, I take that back- the way laws are now, they may even give you worse of a fine than if you did have a gun. lol
-solar