I dunno, it could be useful for something...I think its kinda neat anyhow..I wonder about those super ultra sheer polyurethane condoms? I can't afford an underwater lens for my camera but wouldn't this create a neat effect for artistic purposes? Call it gross but even a vaseline sheen over the rubber. Could be a really cool effect.

This does look interesting. Not sure if it would work better than a ziploc or not though. May have to pick up a cheap digital and some condoms for our annual trip to the river this year and give it a shot though.