Another reason why I vote Sub-zero(and in extent, kirby), is that it seems incredibly stupid to actually roleclaim vigilante, because that would make you number one on the hitlist of the mafia.
Did you read my roleclaim post? I have to kill someone publically. The mafia are going to see me doing so, realise I'm the vig and try to cap me anyway, so I decided to let you all know early so the town can give feedback on my kill.