I absolutely was lucky! I just did the alternator and primary chain replacement this weekend. There were chunks of chain and shavings everywhere. The rotor and alternator were pretty banged up and scarred from the bits of chain that came off, but there was no damage anywhere else that I could see. Even the clutch was in remarkably better shape than I'd expected.
I did need a puller for the front sprocket, and I did find that the lock nut under the clutch plates was only on there finger tight (spec is like 40 ft/lbs or something,) but everything otherwise went according to all the write-ups I've read and videos I've watched.
She's back on the road, and better than ever! I even got enough time to fiddle with the carb, and I'm zeroing in on a perfect tune, but that's a rant for another time.
I'm assuming I should check the chain in about a couple hundred miles to make sure it hasn't stretched too much, yes?