Thanks for the heads-up. I want to read as much as I can about it, to dissuade me from getting one - because I've just bought a Hexar RF. 🙂
Played with an R4A in a shop. Superb finder, and, judging from a few finder comparisons, framelines that aren't undersized.
Two nitpicks in the review. It says the camera focuses from 0.5m - some confusion with the lens the reviewer used, as the rf only goes from 0.7m. It also says there's a multiple exposure lever - I'm not convinced there is, and I can't find any other reference to it.
A 0.52x finder is pretty good. With a 50mm lens, it's pretty poor in comparison with a 0.7x-0.85x SLR. But with a 21mm lens, the Bessa is still 0.52x (I think the eternal finders are about 0.42x), but the SLR becomes something like a 0.3x-0.38x view.