Between the rolefishing and the "let's not worry about this thing that could potentially cause a lynch we don't want after a claim", FoS: Jimmmmm.
Okay.
First of all, the unique votes thing. This is what I'm afraid will happen if we worry to much about it. No one will vote until very shortly before deadline, at which point whoever's schedules allow them to be online at that particular time will get full control of the vote. This is contrary to normal voting procedure, in which votes are built up over the course of the Day, giving time for reactions to votes etc. Wagons are a powerful thing, and if we try to limit them we're costing ourselves information. Having said that, I totally agree with not taking anyone to L-2 prematurely.
Secondly, admittedly my question referred to "role PM", but his actual specific role in terms of PR or VT if he's Town was the furthest thing from my mind. I suspect that he came up with it before he knew if he was Town or scum, in which case we can't tell anything from it about whether he is Town or scum. But if he wants to argue that he would only have thought of it as Town, or that he would never suggest it as scum, then that could potentially give us clues to his alignment, which is certainly all I'm after.