I was going to sell my Canon 1dsmk11 but have decided to keep it as a back-up to my DMR and R lenses via adaptors - I have sold all my Canon lenses .
So now I have a stop down shooter for my R lenses, and I will also try some adaptors for some Hasselblad CF glass I have and anything else that looks interesting.
I couldn't bring myself to sell the camera at its current market price - which is about 1/3rd o what I paid for it! Much happier to leave it as a testing tool for fun on the side.
As another aside - I have bought a D3 and a couple of nice Zeiss lenses the 100/2 and the 28/2. I am reading the manual on the Nikon - so far I am very impressed with its light weight relative to Canon and DMR.
I love my R glass but dont expect to be able to use it with the new Leica DSLR when it comes out... so I am now happy with having a back-up to the DMR, even though I prefer the DMR files - the Canon isn't exactly a slouch and it IS full frame...