I have been kicking around the idea of getting an underwater camera such as the D20 or getting an S110 (or S100) with water proof housing. I was wondering if anyone else had used either and had any thoughts? I would have two primary purposes 1) kayaking: I do take my 7D kayaking, but it is in a think tank holster in a dry bag. For bird shots, I'll still need the 7D, but just for every day shots, a waterproof P&S would be much more convenient; 2) Snorkeling. I don't do it often, but if given the chance I do and would like to improve on the pictures I get back with those waterproof kodak cameras.

Of course, waterproof housing for the 7D could be an option....but I am not sure I am ready for that expense.

Thanks in advance....Brant