Pros: one of the few medium camera's to consider
Cons: getting clear facts (pricing) on the digital back is close to impossible

It is all nice to read about the wonderful camera and it's digital abilities, but NOWHERE will you find clean and clear information on the digital back needed for this. Everyone mentions it on it's website that the ability is there, but even Mamiya self will not communicate anything clear on this. Some places even refer to this camera and the worlds first cross platform camera, which is wrong.
The main reason for considering this camera, is because it's competitor (Hasselblad H1D) can be delivered completely (with digital back) at approx $25,000. So, if Mamiya's price stays below that with some respectable level, then it could be considered, but not under other conditions.