So in a low 20s person game, we would expect 4 scum, 5 if they have weak powers. We've already gotten two:
Godfather Ninja
Poisoner
If we believe Vere, twice, we have a blocker AND a switcher. Either of which, I suppose, could also be town. Blocker is way more likely to be scum tho.
Judging from ET's role, we can surmise both a town cop AND a town tracker. Why have a Godfather without an alignment cop, and why have a ninja without a town tracker of some kind? The Fruit Vendor would tend to imply a scum tracker, but could just as easily be there to muck up the town tracker the way Stuart did (if Verelios is town).