Too bad it doesn't have practical import/export formats. As old as IGES is, it's still used extensively in a lot of fields. Also, it's listed as importing STEP files, but read the fine print. You can't edit the imported data.
It's got some serious intellectual property too. The brains behind it reside at Spaceclaim, which Allied and RS partnered with to bring this to the masses. Spaceclaim's chief technical expert was also the brains behind Solidworks, before he moved on to develop what we have here: A gesture-based interface (look ma! no parametric entry!) that's really intuitive.
The idea of being able to quickly develop the enclosure in parallel with your board/parts to get the optimum design is pretty cool too.
@Caleb: ...it does seem like a great mix of visual interface and mechanical design...
I just received an email from someone I know who says:
Hi Max, I actually know a whole lot about this but I'm under NDA -- here is what I can tell you -- this piece of software is what you want to be using. This is not a run of the mill 3D mechanical program, but has some serious horsepower behind it.