my 2 cents; I think the D800 is the cause for Canon to come out (i know i know, not yet it's a CR1) with a high-mp cam. Due to this, I would expect this cam to compete with the D800 - which a 1D body flying high price-wise would not do.
I am afraid, it might, on the other hand, be a tech demonstration - 1D style with a sensor performing (hopefully) better than the D800. How many of us would wait for a version of that camera to come out with a price within reach of us mortals, how many would get it and how many would jump ship?
Personally, I am not considering changing brand either case but Canon's pricing is getting me reconsider lens purchases so as not to be more invested in Canon gear - have been drooling over TSE lenses, MPE 65 as well as the new 24-70...