No kicking or screaming involved - I really like 3D Canvas. Rhino does not have the UV mapping and animation support required by MSTS and generates the dummy nodes that conv3ds chokes on. My first project was a 40ft boxcar done with Rhino, Corel Photo-Paint, and a demo of 3ds max4. This one used Rhino, Paint Shop Pro, and 3D Canvas Pro so 3DC was actually taking the place of Max in the process and did so very well I might add.
My only concern is that, since I am conscentrating on fairly detailed rolling stock which will likely be used in quantity in MSTS, at some point I will probably need to provide models with multiple levels of detail to keep user's frame rates reasonable.