My first impression of the Mamiya body and a digiback, since this is really the first time Things happen at a lot slower pace, and seems to me it has a pretty noticable kick, compared to the dslrs when the shutter fires. But not really surprised by that, just have to get used to it. I won't bore you with all the other things as you have been rehashing them forever. It's kind of heavy and the grip isn't all that large.
The leaf back has a pretty slick interface with the touch screen. I see why you have been crying for better lcds for previewing images though.
Also, this might finally be the reason for that mac pro i've been delaying for ever. The Leaf Capture is still in Beta for Windows. So far I got some weird errors popping up "missing disk" or something like that. And on my windows 32 bit Lightroom, after playing with an imported DNG files for a couple of minutes, the dreaded inverted out of memory/grey background showed up. Usually I get that after an hour or two with canon files before I restart. I guess first step could be get windows 7 64 and see if that helps but I hate to wipe out this machine and start over. And this box doesn't seem to be able to connect to LC either, not that it really matters but not fun. I was thinking of either using 9-6 pin adapter and using one a laptop with 1394a, but i have a feeling it might not work.