The brand of my housing is Ewa-Marine: http://www.ewa-marine.de/english/index.htm
You can find it online at at B&H or Adorama: www.bhphotovideo.com www.adorama.com
That review is pretty much spot on for the 1D's water resistance, as well as L series glass. I've used my 1D in both rain and snow for Colorado football and soccer games, as well as other things out here in the Rocky Mountains. A regular wipe down with a towel and I've never run into any weather-related problems. And, despite being fully insured, I have some hesitations taking my very expensive camera onto an inflatable tube to be towed backwards by a boat going about 25 mph. I don't know, maybe it's just me...
Doing tube shots I've been bucked out more than a few times from rollers and from drivers taking off while there is still slack in the rope. While I was nearly run over by Aaron Aubrey during one of those mishaps, I was more concerned about my camera hitting his board than my face. I just don't think dunking a camera and lens completely underwater would be very good for its health. Cameras and water really don't mix. If they did there wouldn't be such a thing as water housings.
I'll be back in Nor Cal in a month after I graduate May 7 and I'm really excited to get back on the water and start shooting again. The good ol' Delta and California sun have been calling my name for a few weeks and I can't wait much longer (fortunately I don't have to).
Garrett Cortese Photography www.gacphotos.com