Complete scene export only supports .3ds and .lws and as far as I know DS cannot import those. Single objects (terrain, plants,...) can be exported as .obj. The procedural Vue textures can be baked into image files at time of export. This works fine. The results can be imported to DS and look as one would expect.
In my opinion that is the wrong direction, though. DS is a content plugin for Vue, not the other way round. You are loosing all advantage of Vue by turning things into static objects and texture maps instead of native terrains, procedurals etc. But it “works”.
Edit: I should add that this is based on Vue 10 and 10.5 Infinite. The sky can also be exported for use on a skydome. This is probably the most useful option when going from Vue to DS.