Thanks!
I wonder how realistic would it be to include adapting Sony lenses in the list of viable alternatives? I mean, the Sony GM is 30% lighter and much smaller, whereas this kind of adapters adds pretty much nothing to size and weight. It also seems sharper at least from gauging the bar heights in the respective charts, AND I guess it's cheaper in the end, too, which is kind of crazy a little.
Though of course I may be accused of being an adapter freak, seeing as how I've been shooting Canon EF mount lenses on a Nikon body for 3.5 years now, and very recently, I added the first (good) Sony lens to the stable - the 24mm f/1.4 GM replaced my old Canon EF 24mm f/1.4L II, and so far, I only have positive things to say of it and of how it works on the Nikon camera.