You've got me thinking, Daniel. But switch, I'd have to sell the following canon lenses: 16-35 f/2.8 II, 70-200 f/2.8 IS II, 24-105 f/4 IS, 35 f/1.4, 50 f/1.4, 65 MP-E, 85 f/1.2 II, 100 f/2.8 IS macro, and 135 f/2. I wouldn't have to replace them all (there is no counterpart to the 65 anyhow), but Nikon glass is not cheap. I figure I'd lose more than the price of a 5DIII just in making the switch... I'm really sort of stuck.
(24 disk raid? Sounds excessive to me, but I guess I'm a lightweight...)