Reminder: Don't install watchOS 10 if you might want to return to iOS 16

[FishyFish]

Remember: you can easily try out iOS 17 and then revert to a backup if it doesn't work well for you.

But if you ALSO try out watchOS 10, there's no way to revert the watch back to watchOS 9 and iOS 16 won't talk to watchOS 10.

So if you try out watchOS 10, you are then stuck using iOS 17 from then on with no way to revert and still have your watch work.