I have a kobun, serrated, which I think is very nifty . . . although that sort of design doesn't lend itself to general tasks, so it pretty much sits in a drawer as insurance against the collapse of civilisation . . . which is the only time I'd even THINK of carrying the sucker, given the stringent carry laws in my neck of the woods. A word of caution: when I first bought it, the rubber around the hilt began to peel off from the friction that occurred when sheathing the blade - the sheath catches the hilt to secure the knife in place. I sent it back to CS. they returned it to me, blade freshly polished (bluing experiment that slightly uglified the blade) but handle untouched, despite a letter saying "please fix handle." Irate phone call to CS, more shipping charges, and new knife arrived on my doorstep. I've had no similar problem with the new knife.
Something I didn't know when I bought it - the CS serrations are nearly impossible to re-sharpen, in fact I hear even CS won't do it if you send it to them, so I gues avoid serrated CS knives. But again, a kobun isn't a utility knife so shouldn't be used enough to require much resharpening. Actually, now that I think of it, I did bring mine camping once, and it was a great camp knife! Cut kindling, opened cans (lost can opener - duh!), spread peanut butter; it was in fact an invaluable tool! And I felt quite safe against most any threat while toting it around. Which is easy to do - it's so light you forget it is there. A very good knife, actually!