Any Preferred Rain Slickers for EX1?

[Chadfish]

I live in Humboldt County, Ca, and it rains a lot here. I can't always wait for clear skys, so I'd like a cool rain cover that has good access for my hands and some protection for my Rode NTG3 if possible. Also I shoot rodeo in the summer, and that gets pretty dang dusty.

Does anyone have a preferred rain cover that works well?

Here's one I'm looking at: http://www.bhphotovideo.com/c/produ..._PRC_10_Revolutionary_Raincover.html#features

Thanks

Chadfish