Will, n-gon/quad meshing is not ideal for manufacturing. That's mostly suitable for animation or rendering in apps that don't fare well with heavy poly counts. The real truth is that n-gon meshing produces clean topology, but it requires a lot more poly faces than triangles to define a similar surface curvature. I plan on buying Moi to use as exporter to Modo. So no problem for me. I will have both. But when i send out for RP i will probably still use Rhino's mesher, unless Moi does a better job for all triangles. I'll have to test that. I have a bunch of new projects in work that i need to RP very soon...
shorty
PS - after some testing i prefer Rhino's mesher for models to be prototyped. but if i am exporting to Modo or Carrara of course i would use Moi to mesh my Rhino models...