I was thinking of giving it a try.
It would be a good lume test. And depending on how restless a sleeper you are, you could wake up with 40 hours of power reserve ... on two watches if you wear one on each arm.
I like the occasional personal lifestyle experiment. Currently I'm wearing two button-up shirts simultaneously, along with an undershirt, like Steve Bannon, The watch in bed thing might be the follow-up.