I snagged one of these in Nikon mount off eBay with all the goodies on a buy-it-now with a modest upcharge. I've posted these images in the Yosemite scouting thread, but figured I'd post them here for thread posterity on the lens.
Both of these were taken on the D800E with the f2.8 waterstop in place, B&W conversions in C1:
Here is the same image above with the f4 stop processed identically otherwise. As you can see the image sharpens up and the effect is attenuated quite a bit:
I've discovered that the f2.2 effect is very heavy, the f2.8 here remains a little strong for my tastes, but the f4 effect is perhaps a little too weak for some. F5.6 and 8 it starts to behave like a sort of non-spectacular or vanilla 85. I am going to drill out my f16 and 22 stops to around f3.5 and 4.5 for tweener stop effects to expand the range of effects I want to use this lens for.