The security guy would probably think the person with the slot machine is legit (ie an engineer) and stop you instead

That reminds me of something that Gene may have posted before
During the club blackjack tourny this year Gene was looking for someone to transport two large (4 foot) Playboy chip photos from the Palms to the Riviera for the club auction. Mark Lighterman volunteered. Gene said to me "Id better tell security why he is walking out with them". I said "No, leave it, let see if he gets stopped"
He got stopped
These 'chips' still had fishing wire attached from when they once hung from the ceiling. Security probably thought he had just pulled them down