Well, I picked up this lens on Friday to shoot with my shiny new A7rII, and I've been blown away by it. Really gorgeous rendering and bokeh! It's truly amazing for environmental portraits, which is what I bought it for. It's really giving me the subject isolation and blur that I was hoping for -- it's nice to have that at 35mm, which is my favorite focal length. I had high expectations going in, and I haven't been disappointed.
Eye AF is great to use with this lens -- it's quick to focus, and I've been able to take one great shot after another with a surprisingly high keeper rate.
I will say that my first copy seemed to be a little off, with the right side softer than the left at wide apertures, as Lloyd Chambers had reported with his copy (& Lloyd says that others have been reporting the same issue). Also, the aperture opening wasn't entirely symmetrical, which annoyed me (though I realize that's more psychological than anything). I exchanged it, and so far from my testing, the second copy seems fine.
It is pretty heavy, as expected. It's perfectly manageable if you're carrying it in isolation, but I'm not entirely sure that I'd want to carry it in a bag along with the 55, Batis 85 and a 16-35 or Batis 25. If I were planning to take a full kit with me, I'd be inclined to leave the 55 at home and use the 35 in crop-mode if I needed a 50mm FOV, or else leave the 35/1.4 at home in favor of my APS 24/1.8 or (if I were to get one) a 35/2.8.
But overall I'm very happy with this purchase. I'll post some shots once I take some that are worthy of posting here!