I think there are a few 35 Nokton owners in RFF... It's been available now for three years, and was the first Voigtlander/Cosina lens in M mount. Said to have a very pleasant look, though very much larger in size than the more recent 40 Nokton. I'd like to try one, and I see the price has dropped $50 to $819 at CameraQuest. It's diameter is less of an issue I expect on the Leica bodies, and even less intrusive on the Zeiss Ikon due to the viewfinder being further from the lens center. Wonder if it intrudes on the Bessa-T's RF windows...