Quoted By:
Using an f1,25 75mm on a rangefinder is going to be hell to focus either way. You are much better off using the Visoflex or just using it on the SL. If you are good enough to get a decent number of shots sharp using the rangefinder on a Leica digital with the 75 noctilux you probably are good enough to not be a pleb worried about the corner of your viewfinder being gone.
Also, I like the CLE finder.