Fame
You may well become famous within the offices where you work, especially if you become known as the guy who brings in bagels and donuts every Monday. But that's about it.
Sadly, the most famous consultant in history is the ex-senior-partner of McKinsey (Rajat Gupta) who was on the board of Goldman Sachs, among others, and is now dating Big Bubba in cel block forty-three for leaking secrets about company performance to hedge funds in one of the bigger insider trading cases of this millennium. We guess that "making ten times as much as a consultant thing" got to him.