a little late
i'm a little late, but I have the olympus 790sw also. Check it out, it is gods gift to stream cameras. I saw a video a guy did once where he played a huge brookie at his feet while he took an underwater video. He owns the shop in cherokee if you want to see the clip. I second the I would never take the slr near the stream. Could you imagine the pain of watching your favorite lens drop to the stream bed?