Well, I am trying to be a little practical in the migration to MF with my other gear.
My M8 & M7 are both staying as I really love the camera for its size, file quality, and works great for personal or event work. The M8 gets all the color work and the M7 gets fun personal stuff with Acros 100 and the new TMax 400. However, on the lens side a lot of pairing down did occur. I'm only keeping the 28 Cron ASPH, 35 Cron ASHP, 50 Lux ASPH, and 90 Elmarit. These four are the ones which got the lions share of the all the photos. The mix depended on the subject and camera (film or 1.3 crop).
The Nikon system did take a complete hit in bodies, Nikon glass, and Zeiss glass. The Nikon is what I actually brought to Puerto Rico, which should have probably been the M8 in its place (but live and learn). The Nikon was a really great system, but I needed more for product photography and Nascar event work (the race work is garage, pits, drivers, and set-up stills, not the telephoto track stuff). Based on what I really needed for a second camera system, MF just does meet my needs better. Being surprised by a a crop that gets blown up into a two page center of a magazine or a banner, just didn't work with the Nikon files. The other advantage is that MF gets me a better rate for the photos and appears that it will get me more work. (On the personal side, I just love the MFDB results from many aspects and it makes me happier when I do photography.) Isn't that a big part of why we do this.
I completely understand the original direction of this thread, and hope that I truly went in a direction that works for me without having given up something that I will want back.
My advantage in the M system has been that I have owned or been loaned every Leica or Zeiss lens that is recent and kept what I like and use. I had the same opportunity with the Nikon system and built up what was a great system for my use, until the MF bug bit me and showed me what difference in quality was really available.
My MF decision was also based on use of the Phase/Mamiya & Hassy systems (cameras/lenses) prior to purchase. Currently, I'm going to limit the MF system to a 45-55/50 depending on system, an 80 (plus small extension tube), and a 150.
Now, I'm acquiring all the little pieces such as quick release plates, cable releases, flash adaptors, etc...
I am also going to try these focus / DOF programs to see if they can meet my needs vs. going the full view camera route.
Best,
Ray