FWIW,
I work kind of like Scott. The assembled vocal ends up on one track.

I may hard write a gain change to a passage here, tune a passage there, or De-Ess a section by hard-writing it, but I don't end up with a single vocal part on multiple tracks *unless* I want to (for example) put a delay on one phrase for a certain effect or something that I don't want affecting the rest of the track.

I do not work here, but the benefits are still awesome
Make your sound your own!