I picked up a BGN condition example of this lens from KEH the other day, and intend to use it with Jin Rong's new adapter. I couldn't resist--it was cheap, is an f/2.8 zoom (!), and according to CameraQuest was made with an aspherical element. It seems like a nifty curiosity.
Anyway, I wonder if anyone else has tried it on m4/3. If not, I'll run some tests when it and the adapter arrive.