My gut check on this is that he's not the right face for the part. I've never been a huge fan of Thor in the comic books, but I never pictured him as having a rough-hewn look. For some reason, more of a smooth yet chiseled jawline look comes to mind when I think of the Norse god of the comics.
Then again there have probably been incarnations of the character in the comics that haven't had as much of a "pretty boy" look to them and there is always some level of re-imagining of the character with the transition to the big screen.
What do you think? Would McKidd make a good Thor?