"Well that's a "possible" workflow, but many times you would probably be better off just keeping that model in the poly modeling program throughout and never bringing it into MoI at all - MoI's strengths are more in the area of mechanical object design and not so much in organic creature modeling."

My intent is

Cinema4d > 3d-sketching / concept design
MOI > Construction of the final model

The models I want to build in MOI are not organic, but perfect for Nurbs.

Nevertheless I use the polymodeller Cinema4d for 3d concept sketching and developing the design as polys offer me lots of flexibility and - most important - nondestructive modelling.

MOI comes into play to of the final shape to achieve precision an smooth curves.

Of course I could use renderings of the concept to rebuild the object designed in Cinema, but importing the *obj seemed to be a faster way to rebuild the shapes.