The more I think about it, the more I think I might be wrong about Royston. Given that we have all these fake roles, him not doing anything might be plausible. That and I don't like how BRBP specifically states alignments for everyone but redo (pieguy has a high possibility of scum, rantai 'has a high possibility of scum', royston is town, redo could be either). Pure conjecture but it could be that he is trying to set up some distancing/buddying wifom.
Only thing holding me back right now is that Royston's 'fake' role is independent of a counterpart role. Ie he has no fires to fight, no poison's to heal, no cult to deprogram, no SK to find etc etc, which the other roles have. Seems a little odd.