Interesting you should post that, Ben. I've just been fighting with the thing for the past couple of days. I absolutely loathe the interface, especially the 2.5D crap and the bloody stupid "hold alt, left click, let go of alt, move mouse" thing for doing ZBrush's equivalent of zooming--which is actually scaling the object you're working on. Maybe old-school modeling techniques are too ingrained in me but it put me off this new-age ultra-high poly sculpting stuff and I still like dealing with verts, edges and faces. Trying out Mudbox right now though and it's starting to convince me perhaps there's something to it, interface is a heckalot easier to use, that's for sure.