I don't think think this is a problem at all, the industry has standardised on STEP for assets, as long as CADmium and Truck have STEP support (which they will)

I don't think think this is a problem at all, the industry has standardised on STEP for assets, as long as CADmium and Truck have STEP support (which they will) then they have access to all assets. True, there are dynamically configurable assets for SolidWorks, but any community around a cad package will quickly recreate those.