Late to this party, but 40–45mm FL lenses are my thing, so was very interested from the first announcement. The images Fred posted are very sharp where they need to be (with people, how could you want sharper), and the OOF rendering is superb. I think in recent years way too much weight has be put on absolute resolution numbers—most here make images, and OOF rendering is just so important in the service of that goal.
So, although I do not have a Sony FF body yet, I will, and this lens may be the only purchase for it.