As far as the ice & snow traction of the Bridgestone Blizzak, I can attest to their traction......ASTOUNDING !
I have the ws 50s on my Bonneville & my wifes Odyssey and the are simply awesome.
They are not available in Hummer sizes though. The biggest is around 31-10.50 .

I have read about those in the past, they are nice but expensive. Also, they sell in sets of two so that would be almost $400.00 for the 4.

I am going to Crystal Mountain this weekend. This is in Mt. Rainer area in Washington. They get a lot of snow actually they have the record for the most in a year, I think 108 feet or something.

Anyway, I put the chains on today to test them out. I see no reason why you couldn't use chains like these with the 33 inch tires.