This looks like a very promising application for Revit and 3ds max user:
nPower’s Revit to Max bi-directional translation solution provides your design visualization team the most advanced Revit to 3ds Max translation tools on the market today. nPower Software’s precise surface and solid modeling technology plugs directly into 3ds max enabling an accurate data transfer portal allowing you pass Revit data seamlessly back and forth between Max and Revit without polygonal data loss.”
This video shows the data exchange workflow from Revit to Max to Revit

See how this solution competes against the new FBX workflow in the coming 2009 versions of 3ds max and Revit:

“The FBX-based Recognize toolset helps you quickly and accurately import geometry, lights, materials, and cameras from your Revit Architecture 2009 scenes into 3ds Max Design 2009, significantly streamlining visual communication of your BIM data”
It seems all so simple in this demonstration (scroll down and click on “Revit Interoperability”)