My brother is visiting right now from Hong Kong, and he said to me last night that he almost brought his Canon 5D Mark II with him, to leave with me as a loaner till at least summer. He prefers range-finders to SLRs and has several cameras, though he says if he did portraits more he'd use the 5D more often. It would've been fun to play with that, though I'm so pleased with my 100% awesome husband who bought me the 60D!
My brother did lend me his 50mm f/1.8 prime lens for a while, which is awesome!!