So far I have only shot a couple of rolls of Minicopy II. We were in Europe - and northern Europe to boot for three weeks and I knew that there would be few chances to use a super slow film while there.
I did a quick test - shooting it @6/12/25 iso and developing it in Rodinal 1:200, stand development for 120 min. Pretty close to Dirk's (Japanexposure) recommendation. Seems to handle about 20 iso in well lit, but not too contrasty situations. Similar contrasty look to it as TechPan had.
The Rodinal might not give the finest grain - but you really have to stick it under a microscope to see it even then.
I want to do some more tests with it this summer and also try a couple of different soups, Delagi's D8 and Windisch as both of these work with TechPan.
Could be a fun film with something like the Nokton 50f1.1 - at least gives you a faint chance to handhold it too.
I like the idea of 1000ft of it - that would take a while to go through - though in reality it is only 180 rolls and if the summer proves to be a "long,hot one" it is feasible.
Using it proved two things, the 21f1.4 Summilux is stunningly sharp - and the Nokton 35f1.4 SC is about as sharp as you would ever need!!!!