My company recently supplied lighting equipment for an outdoor festival in Ireland. A highly popular act headlined one of the days. They used two macbook pros with partitioned ssd drives to run catalyst, one as a back up and one as the main, the macbooks ran catalyst off one output directly to a stealth screen, the stealth screen is a major part of the show. These guys proved that the macbook pro is a reliable option with enough power to run a major show, and its something you can take in hand luggage