Well, here's the deal.
I am pleased to hear from people who have tried it rather than people who have not, let alone peolple who are NOT even Tandem masters.
However, Your point is how unsafe it is and next minute you are going to do it again in the future but not everytime, ssoooooo , now you are going to be uncurrent at handy cam when you do it , huh. well I,ll be damned.
I think of it this way.
When doing traditional video, you wear cameras on your helmet, THIS is a snag risk.
There is risk, that I agree, however for my experience level (6000) tandem jumps I fell comfortable with it.
Blue skies