Jjchan: Some wonderful shots, brilliantly composed, seductive colors, very tasteful finish. I guess using Leica M glass on a Z6 is sure more rewarding IQ wise and after a bit of practice much faster. The M line of lenses is so small that the whole package is totally unintrusive. People do not react to it like they do to me, when I get my D850 with a 1.4/105E out. The scene is disturbed, the photographer becomes a player, people change their behavior.
For the Leica 240: it focusses the classical way to match two mixed images in the finder. If you are used to it and have a lot of training: great, if not: ouch. I am sure after a few thousands of exposures it will be totally natural to you, it will feel intuitive. I tried it in film days and did not like it.
Plus I do not like the ergonomics of the current M line cameras. Thick and slick like a polished brick I always fear it will slip.
I made a decision: Big camera, Big lenses, intrude or ,,, for special moments ,,, the X100T as small "unintrusive, unprofessional" stealth gear.
happy shooting!