for three or four years, now. All things being equal it's a pretty good knife. No problems with the SpeedSafe, no problems with lock-up, no problems with the clip. I think it's 440A, not a supersteel by any stretch of the imagination. But it's worlds above anything in 420J2 by Frost. It's very comfortable to hold and it's got a pretty high grind. So it's a pretty good slicer but a crowbar it isn't. If you're a lefty it's almost useless, though. The clip isn't reversable and neither is the thumbstud. If you want a hard use folder, I'd say go with the Banchmade. It's got better steel (440C VS 440A), a stronger lock and it's ambidextrous. But if the Kershaw fits your hand well and you fancy the SpeedSafe you'll be getting a good knife that should last you a long time. We have three Kershaws in the house, a Blackout, a Chive and a DWO I picked up a dozen years ago. Never had to send one back. And the one time I did write to Kershaw with a question, they were very prompt with a reply. Hope that helps.
Frank