Lex cracked his knuckles and prepared himself for the task that lay ahead. There were quite a few benefits he sought from Ripley, the very dedicated and obviously confused Titan. He had no idea what kind of an audit he would perform, but accompanying him in that in itself would be quite enlightening.
Moreover, as himself, Lex could ask questions that the Innkeeper could not, which is what would allow him to gain deeper insight into the forces of the universe, and where the bank fell within them. He could ask questions such as those pertaining to Hell and Heaven, the realm wars and so on.