Follow up to your question about suggestions. A friend recommended getting the plastic bag liners. You can easily see through the plastic and manipulate the functions without having to slide wet hands in to touch your camera. The one they had was similar to http://www.adorama.com/OTRSLF.html.
The friend has done photography for "Color Me Rad" and they have to protect their camera from all the colored cornstarch powder that is raining down.
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