Never noticed this one before - is it new? Does anyone have one?
I like the idea but I am guessing that there will be no electronic contacts for MF focus aids.
I think it took 3 copies of the ttartisan 6bit adapter before I finally felt I had one where the lens was securely mounted.
Quite expensive though, just over 200 quid here in the UK, though if the tolerances are tight and the quality top notch then I might be tempted.
Then again, I am always tempted every time I find something new.