I just found one, on one of my shelves, and I am impressed with it so far on the M8, seems a bit odd to put one of these on the M8, but you guys chatting it up made me try it.
Have not closely examined the files, but from chimping it seems rather sharp, and the focus is on.
Came with some other gear, so I let it sit a few years, focus is a bit stiff, but am thinking I do not want to have someone take it apart for lube and take a chance on re-alignment?
Not perfect, but seems a nice user, and I finally found a use for an old Mamiya lens cap, what else can you ask for?
John