Hey herzogone... I see you wanted it for scuba... I dont know if your aware of the Flat lens case made specifically for the gopro to improve the quality of underwater shots... check out this website. GoPro Hero Authorized Dealer - EyeOfMine Multimedia
Thanks NYCboarder! I was actually aware of the flat lens case (from the link to that site on the other thread), but I hadn't seen that video (or any using the flat); now I might have to order that after all!