contact lenses and M4-p
glasses with flexible frames and M4-p but you will need an oring or felt pad to minimise eyeglass scratches or a second pair for driving with
some M6 have orings built in
or M2 and 28mm accessory finder with a 28mm you dont need a rangefinder often but again oring needed
Another option is CanonP and '60s Canon lenses or LTM Cosina Voightlander again oring needed
Don't like the Cosina bodies for maintainability