I've gotten to use one over at House of Blades. It's a little bigger than it looks in pictures, and it's somewhat thicker than you might expect, largely due to the 3d handles.
It's very handfilling...it's a much different feeling than say the Para's slabs. I like them both and probably still prefer the para, but it's a good comfortable knife.
The stud lock is really neat...people disagree with me, but in my mind, it's still an inverted axis lock (I can actually open my minigrip while holding the blade (so I'm flicking the handle out) and push up on the axis lock and unlock it and close it all holding the blade, and in my mind, that's a stud lock). But basically, you just push up on it with your thumb, and the blade will fall forward a little keeping it from just relocking it. It IS possible to close one handed, but it's challenging, because you're fitting the assisted opening pressure. I do close the mini mojo one handed, but I might not with the spec bump. All in all, I rather like the stud lock, maybe just because it's something new to play with, but it isn't unfriendly either. No lock failures reported.
I like it enough that I'm ordering an S30V one in a few weeks after they're released...now I have to decide if I want to pick up a mini mojo first.