I have one, and paid more than I wished. I like the looks of the knife, it is a traditional design. The thumbstud IS a little poorly placed, and is almost flush to the handle scales on mine, so opening it like that is difficult. I don't wave it, since just looking at the grooved 'guards' scream worn pockets
I can get it open wicked fast by pushing on the back guard (when closed) like a 'flipper' and flicking my wrist, or using the front guard and thumbing it open, in the same fashion as the stud was intended for. mine is quite slick and opens very very fast, but the knife is not the most public friendly design and the blade is as mentioned, designed for one thing, the thrust, although mine is sharp enough to shave hair and slice paper, the grind is too wide to slice a styrofoam peanut effectively. I've never (thankfully) used this knife, although I do carry it quite often and find it is a fine modern and more legal version of the stilletto switchblade. I am a fan of the stiletto, and at some point hope to be able to purchase a modern auto stiletto, but for now the ti lite does the trick. I only own the zytel version, the smaller of the two sizes, and the grip is positive (I have small hands). The titanium version seemed like it would be slicker to the touch, and the price was way out of my range at the time. The subzero quench 420 is more than suitable for what the design of the knife was intended for, but I've never needed it to have edge retention. In my opinion this is strictly a self-defensive knife.
Peter
By the way, I think the titanium version is AUS-8 or 8A but they may have upgraded to 10.
I am thinking of getting the 6 inch zytel version to carry for a while, any input on that?