How is the fit, and finish, and smoothness? It looks fantastic!
Fit an finish is outstanding. Perfect blade centering. Zero blade play. The big thing on this design is the retractable clip, and that gives the handle superb ergonomics, as when you hold it in your hand, the clip is completely retracted in the handle hence there are zero hotspots. On the other side, the sprung clip retention is not quite as strong as a normal steel or ti clip, and due to the construction, it's not a true deep carry clip.
Blade shape looks very nice to me, and as opposed to the usual convex grind on Lionsteels, this one finally is a V grind. No need for reprofiling. Oh, and it's M390 this time! Huzzah!
Action wise, flips good, although on my AL version, the lockbar is a bit to stiff to my liking.
Talking about my liking, when you close the blade it's a bit similar to the ZT0562, where you have to keep you finger a little back on the lockbar for the detent to pass. I never particularly liked that on the 0562, but will probably be called out for nitpicking.
What's important: The usual Lionsteel quality, finally with M390 instead of Sleipner, a V grind, and with a very ergonomic handle to boot due to the novelty/gimmicky retractable clip feature.