He also showed warping in stills mode, again due to the sensor readout speed & ES.
So yes, as others have stated, the S1RII is not *quite* a do-it-all camera like an a1II or a Z8, due to the lack of a stacked sensor.
I'm a little put-off by this. I've been living with an camera (S1R) that did not measure up for stills of moving subjects for so long, I'm reluctant to buy a new camera that still falls short. Of course, the S1RII is *far* better than the S1R for action photography, but psychologically, I'm just not sure I can pull the trigger. Once bitten, I suppose. I'd be happy to spend the additional $500 or whatever to get the stacked sensor. Although I would never pay Sony a1II prices.
Probably will buy it in the end, but yes, I'm conflicted.