I agree with you that they are never together here. The way they are interacting with each other I don't think these players would do as same alignment scum.
I highly suggest you to expect the setup to be bastard. There's probably a Jester or 2 an executioner definitely some sort of neutral killer and maybe a three to four mafiascum team I'm going off host and website meta here.
I also think they could potentially be both town, due to interesting unknown flavour mechanics. But if I had to pick the scum between them I'd say it isn't a team scum but a solo scum and it would be Aivion in my opinion.