Seriously I have seen no evidence why Zeiss 85mm f1.4 is really a winner over A* 85mm f1.4 given pentax lens does fringe a lot more with wider aperture. Basicly that is all about it.
With the perspective of a lens collector, you would love another pristine lens. However, I doubt that would a necessary lens for photography point of view.
Fa 77 ltd at least has that autofocus capability to justify its purchase while you have the ownership of A* 85mm. Another manual focus of similar focal length without any particular feature comparing to what A* 85mm f1.4 is capable of is really not worthwhile. I have seen no stunning bokeh from Zeiss 85mm so far and its image rendering is not much different from the samples in flickr.
Unless you can buy one and shoot a range of scenes, posting here for our pleasure to decide what is the winning lens