That looks great Pete, well done. Was there much color correction to be done? Did you expose naturally to the LUT output as you would expose to regular material? I would love to know what levels you let the sky go to, 90 ISE? Thanks
Now that SLOG is cheap I will be adding it to my F3, this footage is great to see!
As for grading SxS (8-bit) in general, YES - its 100% possible and not sure where the stigma came from that you need to have 10-bit or better to grade footage and get half-decent results. Perhaps that was more with cams that had less dynamic range to begin with, these days 8-bit seems to be fine for at least what I'm doing.