Sean,
I will talk with our other editor, but if I recall he just kept playing with the key light settings in AE and had to do some masking. It turned out fine but when the subject moved quickly it became time consuming. I did do some testing with the camera and tried the two settings sony gave us when we had training. Niether of them were as good as the default carmea settings when it came to keying. Good luck and will post again if I find anything different.