Brat,
I will be picking up both Fragmotion along with another application entitled Lightray 3D shortly. Both of them I will be using to animate and to get content into either 3DGS or Torque.
I will keep an eye on the forum at Fragmosoft to find out about the fbx exporter.
Even still, I can't help but wish that I could go straight into 3DGS from XSI so that I could capitalize on the efficiency of nondestructive editing of rigged and textured meshes. Talk about being able to quickly produce characters/entities...