I was fortunate to pick up a Lochsa recently. I could not be more impressed with this knife. Without drawing comparisons to other specific makers and models -- and I think I own or have owned most of the regularly mentioned tactical/utility makers and models -- I don't remember ever being this impressed with a knife.
It's easy to understand the Sebbie comparisons because of Cook's past relationship with CRK, and the fact that the knives do look similar in some photos. You really do have to handle a Lochsa to see how different it is, though. Knives of this type are all pretty similar when you think about it -- it's the details that set them apart -- and the Lochsa has to be handled to appreciate the details. The palm swell, the ramp on the thumb stud, the clip, the contouring of the frame....
In a nutshell, the knife is as comfortable/more comfortable than any I've held, as sharp/sharper than any I've received, as smooth/smoother, locks up as well/better, etc.
For me, it's one of the best overall packages for utility EDC that I've seen.