I just received my copy of this lens. It seems a bit softer at wider apertures than the 50 APO I previously had. That's not to be determined by these samples, but I have done a few quick tests. Still, it's sharp at wider apertures and perfect stopped down.
I sold the 50 to buy this, as I prefer 35mm. I will have to do some more testing on another time when it doesn't rain half of the day.
Here are some quick sample images at wider apertures. The first two were taken at f/2, and the last two at f/2.8. The first image is at minimum focus distance. All are unedited and were taken with a a7R IV.