I was really impressed by the Catia demo. I think it follows the standard sculpting workflow of most SubD apps, but includes better tools for manipulating hi-res hard surface objects. Most SubD sculpting apps coming out now focus primarily on brush tools. I would like to see if Catia can handle complex boolean operations like PowerNURBS's Detailer can. On their Phone modeling tutorial they literally boolean text into surfaces, which is something I would never try with SubDs.

But like I said, Catia seems to be based on a sculpting worklow and I think MoI is attempting to create a drawing based modeling workflow; much like SketchUp has done.