Underwater housing for DSLR

Just wondering if anyone is using an underwater housing for their DSLR?

I am looking for housings for my 1D mkIIn and having more trouble finding one than for, say, a 20D. Should I get a second body?

More than that - any recommendations on underwater housings? brands?

I am doing a lot of gorge work - i.e. climbing down crevaces where water flows. Not so extreme it requires climbing gear but extreme enough that I am beginning to worry about wetting the camera and thinking some over/under images would be good.

Any advice would be much appreciated.

Thanks.

Try wetpixel.com for info & discussions. Also digideep.com has a full listing of all housings for all cameras available.

I use a 20d in an Ikelite housing but that is pretty large for climbing around.

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