I've had it for about four months, it works, does everything they say. It's very easy to use as well. Import art, create surface on same plane as art, pic loops of geometry and puff them up or down (several parameters can be controlled here), I usually move top to z-0 at this point, pick tool path, verify, ready to cut. It's been pretty bullet proof so far for me.
The only "problem" is that my machine will only scoot at 7500rpm, a high speed spindle would help to keep the cut times down with the tiny end mills or router bits you will need to use for cutting a relief.