Well...
Considering the host set this up at 7pm last night and then went "I don't have time to test sorry, bye", so the first test was live...
The restream toolchain deploy went as well as I could hope for.
Zero latency on the feed, no one's net is so bad there's time dilation or dropped frames or soup. Bro's happy with the new workflow.
It.... worked? Huh.