Yes, linux can read and write Windows file systems. Windows can't read Linux unfortunately but that's OK. I do everything except TG2 in Linux so I'm on Linux all the time. It would be nice to have TG2 on Linux. The rendering node isn't an added bonus for my use but cool that we will have it. I know it isn't a priority to have full Linux TG. That is until more people are using Linux.
There are a number of ways Blender can play with TG2. I'll probably show results from that soon. You can make terrains in Blender. I've had large ones good enough to use as TG2 heightfields. I've yet to test how good this works in terms of getting them out of Blender into TG2. In Blender you can create large mesh terrains or any mesh then burn the displacement into a bitmap in some interesting ways. Because you can see and edit the mesh, you can do a lot before making the bitmap which can be exported in high bit depth. Editing a large terrain could be slow but you could also do tweaks in 3DCoat. Blender has a stack of fractal power so you can make terrains or a bunch of textures that you can't do in TG2. Blender is powerful in terms of procedural textures. There are some limits with displacements which is maybe why people don't use the procedurals that much but then again the same limits apply for bitmap displacements. I think it's more lack of knowledge about the power of it. So you could have exactly the same scene in Blender and TG2. Could be useful.