I have Nikon 24x36 plus a Fuji X now, have owned and used film Leica M's in the past.
The Fuji(in my case, an XE1) is, to me, a fancied-up point-and-shoot where you can set the exposure and focus and change lenses. I've got the 21 and 35 equivalent lenses, and may not buy more.
It's clear that no one has a solution to the freeze/blackout problem in the EVFs. The blackout time on the newest, fastest Fuji XT1 seems about three times as long as on a Nikon DSLR.
I wish Leica would make their rangefinder more useable to eyeglass wearers. Right now it useless wider than a 50mm for me.