Lots of companies using laptops. We carry 3 toughbooks per a/c incase of accidents etc. Not used for approach, more for manuals, t/o perf, landing perf. Personally I would love to have one, many of our crew already carry personal ones with all our manuals and also airway charts loaded. I'm not an ipad frenzy man myself, but they are brilliant for what we would use them for.