I had a play with it to but I had so many crashes that the current windows beta is pretty much unusable as is although the mac version might be fine (don't really know).

Looks like plenty of great tools in there and far more comprehensive and complete & powerful than sketchups tools. Sketchup doesn't even have a fillet or chamfer tool.

My initial thought is that this software won't be cheap when finally released.
Anyway, I'll keep an eye on the development of this software as it looks like an extremely promising modelling tool. Yet to try how it exports stuff as this will be a crucial function for me come uv mapping and rendering time.