There was a thread in which some people were providing feedbacks on the “new” UC patch.
But as everyone said, there’s not much to say for now out of :
-it has potential as it allow sculpting close to how the very most excellent Sculptris does
-it is very very buggy
-it crashes often
-only working on an old Blender 2.54
-it has some heavy slowdown even on very low poly models
Maybe once Bmesh will get ready , bug free and stable for Blender, we’ll see more progress on the UC front when other developers may join the effort.
But meanwhile, using Sculptris is always a good idea if you’re after a “dynamic face on demand” sculpting method.
It’s always a fantastic application and Blender does not have a problem to import sculptures made with Sculptris (through Sculptris OBJ export option).