Indeed, it works. It also works with the 105/4 on PN1.
A few quick shots with the 600/5.6 AI-S. I find it not handholdable. I really need a monopod. At minimum focusing distance, 5.5m, I can't use the 200%zoom, the stabilization shake is too large. It is better at 15m but, for me, only 100% works. I did shoot this in "real life" conditions, as I would be out in the woods with little time to focus. Absolutely no esthetic consideration, my only goal was to assess how stabilization and focus work. On the last 2 pictures, if you know how active these birds are, you have a good idea of the time I had to focus.
Z7 600/5.6 at f5.6 100% center crop of the intended focus point. ViewNX-i conversion, no PP except crop, which is awfully slow with Z7 NEF
Last picture is full size, for context and relative size of the crop.