First off, thanks for sharing this. VERY cool tool.
To me, it sounds better on the single vocal than with the harmony. I'm guessing because the tracks are to identical? Specifically, it's really noticeable on the singers harmony vibrato to me. I do know there are a few tricks around this; but would have love to have heard them tried.
He did a great job explaining and walking thru that just about anyone could follow it. Things keep moving forward. Yes!
Thanks again for the share. This kind of thing helps us all.