I messed with one today at JT, and it's simply a sub-standard, high-powered, high-capacity, high-ROF pistol. It has it's merits, but DEFINITELY not my style.
Ron and I discussed it, and both decided that the coolest feature was the 40-something round magazine capacity.
That said, the KJW all-metal M9 is more my stylee. That's why I rock one, with 5 mags, biotches!