I've been a collector for a few years. I taught a survival class for new cadets at school, and then I got involved in knife fighting training which I thought was really interesting and cool (and scary). Regardless I ended up collecting a series of survival, fighting and pocket knives. Most of which I'll use when I can. Otherwise people would be like "oh you collect knives" and then give me the klingon war blade or something (just a generalization, I don't have that or really even know about it). I really like to use the knives in my collection though.
I carry a Kershaw Leek with a partially serrated blade daily. Before that was a Spyderco clipit delica. When I go on river trips I carry a Kabar Tanto blade with a partially serrated edge (I am looking for something a little smaller to take though). Car knife that I'm questioning the legality of is a regular Kabar USMC fighting knife. My camping knive is an 18" long by 1/4" thick Swamp Rat (Busse). That's a nasty knife that I almost took my finger off with once. Then I have a bunch more misc Parangs, Machetes, fixed blade fighters like the MOD CQD Mark V ATAC.
BTW if anyone knows a good spot I can get a CQD Mark 1, let me know. Haven't checked ebay in a while so I might do that soon.
I'd definately be interested in a cigar for knife trade in the future, just not right now.