Interestingly, I've been messing around with an unbiased render plugin for Blender called LuxRender.  It's a bit on the slow side but does produce some very nice renders (from what I've seen lol)

One thing that did strike me is that Blender uses Python to write the exporters - they normally write the "Scene" file to something that can be read by the render engine.  Vue supports python but I don't know how much of the scene geometry could be written out to a file and imported into something else.  Maybe one of our Python guru's (Chipp or Dave) could comment ?

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