Yeah, I'm an interrupter and it's a tough urge to suppress. That said, I can and absolutely do suppress it, especially in meetings with people who I know are not interrupters, so it definitely frustrates me when there are interrupters who just make no urge to suppress it. In those cases, I try to use my interrupting for good - interrupt the interrupter to ask the very smart but quiet non-interrupters in the room for their thoughts.