Here is an initial list of FAQs which have been asked :-
Question :- Can I export .dae .x3D and in other formats?
Answer :- Yes as Virtuoso uses the Virtuoso Content Editor (VCE) which enables creators to import their object models in a variety of formats. But the natural preference for the game is FBX
Please be aware that their will be constraints on the number of materials and textures per model. Including polygon mesh sizes. If your model does not conform then VCE will tell you.