Nice review of a nice lens. I bought X-E5 with this lens and I find this combo exelent.
The (just a little) noisy af is not a problem for me, but I use it for photo and not video. I think the af is pretty fast and precise.
The only week point I have found so far is when I use it for close up. The bokeh could be better here. In some situations small hardedged highlights appear, so hard light in the background must be avoided. Also when you go very close you have to stop it down a bit to get sharpness.
