you'll never know where the bid or ask is in the pit. can you trade without that kind of information? it practically guarantee's slippage - most of the floor guys just make a market that they can offset on the screen, so the worst price they can give you, they will. why pay a floor trader to make a spread off the screen, when you can just trade off your own screen?
dont you know that the electronic volume dwarfs the pits nowadays anyway? the pits are long dead.