Hi Chris,
I took a bunch of pictures including the O2ptima at DEMA last week.
Those will go up throuout the week, unfortunately I do have some work to do.
I had a long conversation with Phil, Farallon's O2ptima project manager.
He promised some info regarding the testing next week when he gets back to the office.
In regards to the instructor, John P. Jones is a member here at Rebreather World. He lives and dives FL cave country and has been spending the last year on one of the prototypes. He gave me a detailed run down of the unit, changes etc and I wouldn't hesitate getting training from him.