Well. Just got the R3M yesterday. Work is preventing me from shooting a roll until the weekend, but I can say right off the bat that I think it's a stunning camera. Heavy, solid, beautiful--it's hard to imagine anyone complaining about the thing as a physical artifact. I like the finder, although I may have to get a diopter attachment because of my glasses...my only complaint is that it's very hard to see the meter digits in bright sunlight. But I suspect that once I get a reading on a bright day, I'll largely be sticking with the same settings, with only small adjustments. The RF is perfectly aligned, the patch is nice and clear.
It's true that the shutter is loud, but I'm not sure that's ever going to bother me. It's got a lovely sound, IMHO, and there is almost no camera shake when it fires...the whole thing just feels SOLID, very connected to my body.
I do think the collapsible format of the Heliar Classic is kind of dumb. It doesn't actually collapse much, and I would rather CV have just let it be longer and given me larger focus and aperture rings. That said, though, I'm sure I'll get used to the ergonomics, and the photos I've seen suggest I won't be complaining too much when it comes time to scan the negs.
I'll post pics Monday or Tuesday, I hope!