The Rin'negan isn't classified as a Kekkei Mora. It's still a Kekkai Genkai on the basis that one can unlock it through a bloodline limit (reconvening Hagoromo's bloodline through Indra and Ashura's chakra). A Kekkei Mora is the one where you can't unlock it at all. Anyone with Six Paths Senjutsu has something from Kaguya directly (whether it was the Juubi or Naruto getting chakra from Hagoromo who got it from Kaguya).
Anyways...
I don't think they would restrict Sasuke as much and I assume he would have at least have basic mastery of the Six Paths in 2 years. Naruto didn't use RSM otherwise he would have won even easier. Regardless... Toneri wouldn't have touched Sasuke in CQC due to Amenotejikara. Shinra Tensei nullifies those pseudo TSB's. Susano'o slashes clash with that moon hollowing sword. I think Sasuke can quite easily end it with the following combo:
Bansho Tenin -> Amenotejikara -> Chidori.
According to data book facts, it most certainly us classified as kekki Mora, you're just drawing assumptions as it is still unclear as to what classifies a kekki mora, therefore you are drawing an assumption, and I'm taking databook facts>hypothesis. The rest is obvious.
Well that's one way, I don't think they'd restrict sasuke as much either, if toneri tries to punch sasuke, asura path is still a thing to tank to back up sasuke's already high durability, it shouldn't take a lot of effort on sasuke's part, and the TSB are just green due to toneri's chakra but they are still pretty lethal but saauke can get around them.