Until today it had never crossed my mind that the Sony's in-body stabilisation might not work with manual lenses. The idea seems far fetched, but it has gained some credence on the forums.
Last year I spent some months with the Sony A7r, the world's first full-frame mirrorless camera other than the Leica M (which isn't really mirrorless in the sense we now regard it). Sony did a fantastic job of squeezing a full-frame sensor into a relatively small body. And for owners of Leica lenses it was a magnet for experimentation. I liked the A7r immensely, even for a first stab at a new genre. My only serious consideration was the noisy and vibratory shutter which was obtrusive in street photography and also caused camera shake.