Ingenious....But I probably wouldn't buy it....seems like an extra step as I am not that health conscious....lol
Couple things I noticed:

1. the cup looks kinda big. I play pong with min of 3 beers per side. It looks as if the slip cup would sit right on the beer if you play with more than 2 beers per side.

2. the contraption that keeps the balls in the cup....This defeats the "Guys finger and girls blow" rules when the ball is spinning inside the cup lol

These guys are going to make alot of $$$ with this product though...