Game works in stereo almost perfect, after some ini file editing, that is.
Shows are not rendered properly. To solve that you must go into Engine\Config and find the Baseengine.ini file. Inside it you need to edit DynamicShadows=True to false.
I suspect that LightEnvironmentShadows=True have to be also edited, since they don't appear at the correct depth, but haven't yet tested this one.
This, and the annoying crashes under vista x64 apart, the looks great in stereo 3d. You can set it for depth or pop-out and either way it still benefits a lot from the effect. Can't say much about the gameplay though, haven't really sat down to test it yet.