1BTC = 1pint
Wonder what the exchange rates will be? Don't know about Australia but the main on beer in the UK is fairly slim when you consider the taxes (which must be paid in 'real' money), so you would need to hedge these transactions pretty quickly.
I'll bet the local bitcoin pusher takes his slice on brokering the conversion back to money, maybe? Bitcoins are a bit like a hot potato, you don't want to hold onto them too long unless you want the risk of getting burned.