Right. My comment about coverage and the XCD lenses wasn't based on bayonet size. It was strictly an in-my-head extrapolation of the illumination curves on the data sheet. Here, look at the 45mm:
https://cdn.hasselblad.com/14ddcdfc-bb4b-44d3-ab14-257c2b8b76b2_xcd45+datasheet+uk+170227.pdf
If you do the naive, simple thing and just extend that illumination curve out to 33.6 mm (half the diagonal of the big Sony 100MP sensor), things start looking pretty dark. And, of course, we have no idea what might be happening to the MTF curves that far out, either.
That assumes there isn't some sort of sharp cutoff just outside the chart area (which there very well might be). My suspicion is that Hasselblad wanted a lens designed to give optimal results for the sensor in the X1D, which means the coverage was almost certainly restricted to that area.
Of course, the right thing to do would be to measure the actual image circle of the lens. We know the flange to sensor distance so it should be pretty easy to do. I don't have one handy, but several people here do