After seeing this thread I orderd myself one from Kizylar-Messers in Germany. I live in Sweden so it was the closest supplyer I could find.
I got the one with a wooden handle part of the reason for getting it is that I am into SCA (society for creative anachronism) (medivela reenactment) and I have been looking for a historical folding knife for quite some time.
I have tried it out a little. The grip with the friction lock is hard enough for most tasks, it will let go a little if you apply a lot of preasure on the back of the blade, but the palm of your hand will help to keep it in place.
It is really great for kitchen work. The angle of the handle and blade works very well for cutting veggies etc.
The carbon blade had a small burr on the edge but a few minutes with a ceramic stone honed it to razor sharpness. It has a saber grind an you can probably reshape the edge quite easily, however it cuts very well.
I made a sheath out of leather, so it can be both a dangler from a belt or in a pocket.
The mechanism is a friction lock so it is the force of the sides that keeps the blade in place as well as the preasure of your hand. It feels secure enough, I had it open a little when dropped to the floor and it feels secure enough to go into a pocket without a sheath but I would recomend one.
Open
http://farm5.static.flickr.com/4040/4334142287_19fd5b3bc0.jpgHalf open
http://farm3.static.flickr.com/2701/4334141397_43db8d6db6.jpgGallery
http://www.flickr.com/photos/lord_edricus/4334141397/in/set-72157623364303762/