I carry a kershaw leek under my hospital scrubs at work and have had no problems with it opening unintentialy. It has a lock just in case and I used it at first but it kind of defeats the purpose of quick deployment. I also have a benchmade 705 that can be opened one handed. It has a much sturdier blade. The leek is scary sharp. It's not a knife to play around with. It's also not a knife for serious work. It has a fine point and a scaple edge.

So I would say it's not really a gimmick, just depends on the need. Any folder should be able to be opened one handed though. I can flick my axis lock benchmade as fast as my leek, although it takes a little more finese.

When I am at work, at the hospital, I usually carry my leek because its thin and sharp. Other times I carry my 705. My other folders are gathering dust. I had my kabar folder slip on my cutting bait because the lockback got jammed with dirt and stuff. It really made me loose confidence in it. It was one of those old models with brass bolsters, wieghted a ton and had a belt sheath. These days you can get a knife with good steel, solid lockup, light, and a nice clip, so coworkers don't know I'm being politically incorrect!! Life is good! <img src="images/graemlins/smirk.gif" alt="" />