A good review Nick - as per your usual standard it's all useful.
It makes an interesting read placed against your two-part X-Pro 1 review.
At a Toronto launch event the Fuji Guys insisted that the OVF remains a key part of their plans. This should prove interesting in future models, such as the X-Pro1 successor.
One thing that I feel doesn't get enough attention is the ability to add overlays to Fuji's OVFs. I don't think anyone else does this, and it's a superb feature - especially the histogram.
I agree with you about the EVF. I'm not a huge fan of EVFs, but this one really impressed me. It wasn't simply the size and clarity (both outstanding), but also the realistic rendering. Overall this new X is, as you say, very together, and very fast. For some this will make a real difference.
The other thing I'd add is that in use I found that the X-T1 is no smaller than the X-Pro 1: the hump creates a bulk that in my view makes up for the slightly smaller core body size. In bag or hand there isn't much difference, though the X-Pro1 is less noticeable.
The Fujifilm people seemed determined to make cameras for photographers.