I have many friends with Nikon D300s and Canon 7Ds and they say they can handle pretty much anything they throw at them. I know the 600D is way less fit for this but I just would like to know, out of curiosity, what conditions that it could maybe withstand. I am only interested in how much the body can take, because I know that the total weather resistance depends a lot on the lens (let's assume I have a EF-L tele lens attached).
Also possibly, how does it compare to the 60D in terms of weather resistance?