This would have been a shut up and take my money moment until I saw that sync speed.
Why? Light it with HMI's or LED's and roll with it. Yes, it sucks that it doesn't support a leaf shutter, but with lighting options currently out there, we can make it work. There are a few leaf shutter options on the Pentax 67, I wonder if they'll work with the 67 adapter
Personally, I'm excited to play with one. I'm even considering it an addition to what I currently shoot, a H4D-50. Things like shutter speeds faster than 1/800th, and ISO's going through the roof.