I can't give you any technical advice, but personally I think it certainly will.
My friend uses the 1dsMKII and compares it to my mf images. The koday proback still had much less noise and better resolution than the SLR's
Also the sensor size is also part difference. the larger sensor size seems to give much better resolution than the smaller ones.
It would be very hard (even though I use Canon digital also) to give up my mf
imaging system and go exclusively to the 35mm
While my hindsight is 20/20 I can not begin to guess what the future holds for mf digital imaging, and of course the various brands that might not be around in the future?
My friend went from Hasselblad equipment to the Canon digital. He is quite satisfied. The biggest argument is that he can get equivelant image quality he was used to with the Hassy and only have one system to worry about.
Good luck on your decision