Not a big fan of that myself. I guess I usually read code in my head on some level, and .something isn't readable in the same way self.something is. Also, that dot is really small. As a separator that's size fine -- good even -- but if it is an independent modifier that's bothersome. Plus I'm not so much looking to save a few keystrokes by taking it out of the signature, as much as bringing some symmetry in signature and use.