Canon EF-S 10-22mm for wedding (your input)

Hi,

I am interested on adding a nice wide angle lens to my collection. Specialy for Wedding under low light. I have read about the sigma and tonika but the reviews look to be soft at 10-11.

So far the Canon EF-S 10-22mm looks great.

What do you think? and would love to see some sample photos if possible.

I will use it with my 50d and 20d.

I know this lens will not work with my 1dmk2.

As of know I can go as wide as 17mm with one of my lens.

Thanks