I just phoned up Point Grey to get their prices, spoke to a nice women in Hamburg, unfortunately Point Grey are in Munich, so I redialed, they are nice people too.
I think we might have to discount the point grey as an option. I've been playing with their software. It would be easy to create a Quartz Composer application to playback the footage as it comes from the camera. If we want to get it into a fisheye form for editing as video things get a lot more complicated:
First you have to use their software to re-orientate the cameras to get an equirectangular like this: Otherwise we can't extract our 25º fisheye...
Then rotate, it a few degrees
then crop it for 135º truncation