Finally, I got around to work on one of the beauties, the 18/2.8s.
Now, I have one mounted for the m4/3rds. Covers the frame completely. Sharp enough for me. Field flatness is good. Most importantly, the lens is capable of showing some separation, even at f/2.8 (for the typical range I would sue it for). Only handicap is the fixed aperture. Does not bother me, considering the size (has a 30.5mm filter thread) and the weight.
Couple of shots showing the lens with the Computar-TV 25/1.3 (40.5mm filter thread and already mounted on a m4/3rds to C adapter).
Both the shots taken with a 18/2.8 on G1 at close range. Will take it out tomorrow to give it a workout.