I just picked up a Plain Large 21 Insingo, as I severely missed my previous one. I very much enjoy CRK's damascus for ease of sharpening, but the Insingo is just about my perfect blade shape. The one I received is a perfect specimen, and, even more, born on my birthday last year -- what a nice sign that this knife is for me!
Interesting note -- both this Large 21 Insingo I have and the last one I had (born in December 2014) have had earlier lockups than any other Large 21 I've had. Has anyone else noticed earlier lockups on the Large 21 Insingos?