I've been using my K390 mule almost exclusively for the past couple weeks.
I have to say, I'm extremely impressed. Not impossible to sharpen (with my meager skills, that's saying something), takes a great edge, and seems to hold it forever (and then some).
Has anyone heard anything about the chance of a sprint in this steel?
I think it would be an ideal steel for a Manix 2 sprint (scandi grind would be excellent!). Or for a Bushcraft "NASA" sprint. But heck, if there's a sprint in K390, even in a knife I've never tried or don't like, I'll buy it.
Even if it never happens, I'm very happy with my Mule.
Spyderco deserves huge props for the Mule Team program.