Hi Kenmo, both Rhino and FormZ are multi-purpose/"hybrid" type modeling apps which have support for modeling using either polygon mesh objects or NURBS objects. But these different object types have pretty distinct toolsets and so having this adds a considerable amount of complexity and weight to the program UI. They have a whole lot of different stuff all mashed together into one app.

One of the things that MoI is focused on is being streamlined with a lightweight easier to use UI. So MoI is not set up like that.

If working on imported SKP polygon data is an important function for you, then Rhino or FormZ could probably fit your needs better than MoI.

- Michael