Mine, basically, replaced the rest of my EDC-rotation for several months, but eventually I cured myself of Vulcan Sickness. I really wish they'd flat-ground it. Also, I think they should re-engineer it, so that the blade can't strike the backspacer, when the arc lock is pulled back (this allows the closed blade to dip deeper into the handle), that's a poor design flaw, in my opinion. YMMV.