Marvelous sharpness and bubbly bokeh! It is my target lens and still looking for one at reasonable price.

Sold mine for 200 euros. It is a good lens, the only problem I had is the massive CA on the edges. Sometimes it is uneditably thick.
Also used it on Pentacon 6x6 for analog photohraphy, it was nice.

I have a Kiev 88CM, but I also consider to get a GFX body with an adapter when I got enough money. Right now I am focusing on 120 film format.

I'm going to stick with my Sony a7iii, I was carrying 3 cameras at one point xD Pentacon six, Sony a7, and a Panasonic ultrazoom. But it was too heavy and was just complicated. Plus the film developement was also really slow because of the corona.
But it can be fun. I bought also a cathode ray screen projector lens (well it is BIG), and it projects large format, did a few test shots and looks promising. It is somewhere like 300/f2. It has a 50mm equivalent FF field of view and extremely thin DOF. Using a home made sanded glass for the light capture. Still need to be boxed.