So the artist I recently offered assistance with crossposting all his work to e621 has two monikers.
Here's the deal : he has two accounts, and two monikers.
He wants one to be tied to his more fetishistic art (Watersports/Inflation/Vore), while the other is tied to his tamer work.

What to do here?
Edit : Artist has asked that I not release either name until absolutely needed.

I say, go ahead and apply the appropriate artist tags to the images, with the proper accounts sourced. If there's no obvious connection, other than right here, there shouldn't be a problem.

I know of another artist doing it, I'm sure it would be fine.

Tag images of his fetishy art with one account and tag the tame ones with the other account

In the past, we've allowed artists to use separate sources/artist tags for their SFW and NSFW art if they don't want the two to be associated, so it's allowed in this case as well.