Manta Bite scuba regulator mouthpiece

I was poking around the interweb and I stumbled upon this SCUBA regulator mouth-piece: The Manta-Bite. Apparently, it’s designed to be placed in your mouth and then the “manta wings” create a water barrier.
This would allow you to relax your bite on the mouth piece and in theory make it more like breathing with your mouth slightly open.
The picture to the right shows how you pinch the mouth piece before you shove it in your mouth. I’ve read of people using these to protect their airway should they passout underwater. The thought is that with this type of mouth piece you wouldn’t lose the regulator as your jaw relaxed.
Maybe it’s comfortable but to me, it looks like it might rub my gums raw, I’d need one to review.
$39.99, available in Clear, Green and Black
Link: http://www.manta-bite.com
Popularity: 17% [?]
