You are probably at most only gonna be here this one hand, and unless the loo boy is playing with your money, you really are going to play this hand conservativly. You wouldn't want to go broke here unless you hate loo boy.
Chip stacks should be apparent, as the rules state you can't hide your chips.
For a 1 hand sit in, villians read on you in other games bears little consequence.
Your knowledge of the villian is more usefull than his of you in this situation.