Okay, so years after the hullabaloo of this lens has peaked, I was able to get into a camera shop and try one. Wow. Just wow. The lens is definitely smaller and lighter than the Voigtlander 35mm f1.2 v1, and still balances decently on the M9. This is a big plus as I am a bit borderline on the size and weight of the f1.2 v1.
Wide open it is SHARP. Heck, I am so impressed. I'm used to my Voigtlander 35 f1.4 and f1.2 being glowy and a little hazy wide open, but the Distagon has none of this. Bokeh is smooth and has no nervousness, like the Nokton f1.4 sometimes has.
The focus ring is firm, although it might loosen a touch over time. Likewise with ther aperture ring. I cannot say enough just how impressed I am with the wide open performance.
I haven't tried the Voigtlander 40mm f1.2 yet, but I will when I can, and hopefully compare it with the Distagon side by side, shooting the same things. It will also be interesting to see if there is a difference in T stop between the 35/1.2, Distagon f1.4 and 40/1.2, because I've found that light transmission in the 35/1.2 is pretty high.