[joeriel]

It could make for interesting cutaway shots or PIP, but as you said, it would only be useful from time to time.

Previous footage I have watched of football players (American) is very disorienting, and the field of vision is very narrow with a helmet mounted camera. It looks like the player has tunnel vision. However, a player's eyes will dart back and forth very quickly taking in a much bigger picture, so you aren't really seeing what they are truly seeing.

The Madden video games implemented a first person perspective (I haven't played for a long time, so not sure if they still have it), and it was nearly impossible for me to play in that mode. You don't have any peripheral vision using that mode, and that same problem will exist for these live sport shots.