Gun Tests ran a report on one in their newest issue. I just read it yesterday - let's see what I can remember (this is all IIRC):
They were unhappy with the 20-lb DAO trigger on their sample (they could only do about an 8" group at 7 yds . . . slow fire) and they gave it a "Don't buy" due to this and a number of light primer strikes that were insufficient to discharge the rounds. Velocities were in the low 700s with 230-grain ammo (3.2" bbl), and would be unlikely to result in expansion. The gun was thin (1.1" across the grips) and reasonably small. They had concern that schmutz would get up into the striker mechanism because of the design (Hmm - perhaps this accounted for their light strikes?).
I've always thought these looked interesting, but I think Gun Tests put me off any thought I might have ever had of picking one up.