Not a happy Apple customer.
1) After my run playlist randomly stopped syncing with my phone, I decided updating might fix it.
2) When I tried to restore from backup after unpairing and re-pairing, got an error 'Restore Failed; Failed to restore with Error: Error Domain=NBErrorDomain Code=0 "(null)";. So I had to set up as a new watch, which meant having to re-tweak all the settings afterwards.
3) So about 1 hour in it was finally ready for the update. I started the download. Estimated time remaining at the start varied between 2-4 hours. It came to an end at about 2 hours. Or was it the end?
4) At the "end" IT SAID CANNOT VERIFY UPDATE BECAUSE I AM NOT CONNECTED TO THE INTERNET. BUT I WAS. AND THEN THE DOWNLOAD THAT TOOK HOURS APPARENTLY GOT SCRAPPED BECAUSE NOW IT'S DOWNLOADING AGAIN, BACK AT 2H LEFT.
WTF APPLE???!!!
Seriously folks, go on a vacation while Apple Watch is updating. It's an all-day thing.