Great thought. Wish it worked for me but I'm still getting the same symptoms as @AppStoreIsLame. I have all Reminders and Notifications settings 'on' on the phone. No Reminders setting in Watch settings but Notifications are all 'on' and I still never get notifications on either of my watches or phone; only on laptop. Surely/hopefully there's some hidden menu item that we're missing and this is not the way it "works" - only posting notifications to laptop.
This is especially annoying when I set the reminder via Siri on a watch (most of the time) and then it fails to notify me. Defeats the purpose of the "feature" and I've just stopped even attempting to use Siri for reminders; well... using Siri for fake/non-functioning reminders. So many things seemed to have taken a detour since WatchOS 10; ugh...
Even signing out/in on phone doesn't change anything for me. :-/