I've carried a
Benchmade 942 (Warren Osborne Axis lock) every day since my birthday in 2001. I had commissioned a custom knife from Mr. Osborne but had to cancel the order when I moved; I thought the production knife would make an acceptable substitute and I was right. It's been to Korea, Iraq and many field exercises, and while the coating is pretty dinged up the knife is still going strong.
I also usually have a
Victorinox Rambler in my pocket. It's much more capable of delicate work than the Benchmade.
Unless I'm in a suit I have a
Victorinox SwissTool on my belt. I've purchased or been issued over a dozen Leatherman and Gerber Multi-Tools but all of them have broken. On a deployment to Kuwait back in 2000, every last multi-tool in the company broke except for my buddy's SwissTool: I bought one at the PX the first chance I got and it has
never failed me. For what it's worth, it's the same multi-tool used by Les Stroud on the show
Survivorman.
For times when I can't carry concealed (like, oh, pretty much all the time here in Maryland) I keep a
HideAway knife on my belt. It's small and nondescript, wickedly sharp and amazingly handy.
In colder weather I usually have a knife in an outer pocket of my jacket or on a lanyard around my neck (either my old faithful Boy Scout model
Victorinox Huntsman, a
Spyderco Kiwi or a
Cold Steel Spike), since they're much easier to get to than one under layers of clothing.