It depends on what you are looking for. If most of your water tie is spent surfing and snorkeling or diving in less than 30 feet, I'd say you have found your match. The D10 has great reviews and looks like a neat little camera. I almost got one when I picked up a job snorkeling for Marine Debris. We weren't allowed past 30 feet.
If you are looking for a camera to go SCUBA diving with regularly past 30 feet, the D10 is not the right camera for you unless you get a housing for it. Some people have taken their cameras below 30 feet, but that doesn't mean all D10's will go below 30 feet and be okay, it just means some have. I wouldn't do it repeatedly. For a diving camera, I'd spend the extra money and get a camera with proper housing. I would personally not go with an Ikelite housing either since I've witnessed many more manufacturer malfunctions with their design, but there are many who would disagree. I like Canon cameras, stick with the Canon housing. My $.02.