quick and dirty demonstration of the state of things so far:

Unity3D camera being controlled by Previzion, respecting position, orientation, zoom and focus. Live camera feed is chroma keyed using PixelConduit, streamed via Syphon to Unity3D where it is composited with the virtual environment.

Enjoyed a 3 day guest lecture at INSEEC London where students got a crash course in Unity, designed their own level and on the last day got to explore it on the Oculus Rift.