I have take some IGS files and convert them polygon models, proably sub-d at that.
I know MOI won't give me a perfect Mesh for that sort of thing. But if I can do anything to reduce my work on the polygon side of the pipeline it helps. Worse case I can do a retopo in 3d coat.

I'm also starting to have to reproduce items, cars etc, that were clearly made in a nurbs package.
But having to build them with sub division modelling is a pain.
Using MOI just to produce a fast low res model can be a big help on the poly modeling side.