[quote=@PrivateVentures]
I claim Dimir. My chain-smoking information broker can't sell secrets from Rakdos or Golgari, after all.
[/quote]

Well, actually Golgari is the heart of the undercity so...

He probably could. In fact, he probably could do so more effectively if he was known in the undercity, House Dimir is just one of the routes.

(plus with the aspect of tri colours being capable in the character sheets you could go Sultai colours)