I listened to it, and it's not quite completely clear but probably the description of reading "tessellated data" from the .3dm file means only sucking out already existing mesh data from the file. Meshes in a .3dm file (either attached as a render mesh to a NURBS object, or as an independent mesh object) can only contain triangles or quads.

MoI does not store any kind of polygon mesh data in a .3dm file, only NURBS data. So if they skip all the NURBS data, it won't do any good with MoI-generated .3dm files.

For Rhino .3dm files, I guess there may be some kind of convenience factor, but functionally your end result would be the same thing as exporting .lwo from Rhino.

So I wouldn't get your hopes up too much....

- Michael