focus indicator can not be seen when aperture is closed (f8 and more).
I used 400D and 40D with Leica lenses - but fully returned to RF for street photography. Too heavy, too loud. To me it's ok for landscape or long distances (zoo, parks ...), but not for small roads and traffic.
Before buying an M8 I had a RD-1: a really fine camera, but with certain limits in bit density, of course. It's a pity this camera will not be further developed.
Cheers, dacaccia