We had one, at least from 2006 to about 2012 or so.  His name was Harper.  Dour, nerdy, drab, but quite effective overall for a number of years.  But he stayed on too long and assumed a bunker mentality, which was really unfortunate because it led to the rise of the empty suit we have for a PM today.  I have no doubt that if he had stepped aside in 2012 or 2013 for Rona Ambrose to take on the role, she would be PM today.