DENVER - Last summer, Luis Benitez had a question for Gov. John Hickenlooper, the man who had just hired him. "Do you really want a dirtbag in this office?" This summer, the dirtbag sits wearing a collared shirt in his office on the 27th floor of a downtown high-rise. He keeps mementos of his six Everest summits here, keepsakes of his decadelong career as a guide on Earth's tallest mountains.