"The whole point of the EFB is to make your aircraft paperless, hence no paper charts on board at my airline."
Fair enough, no disputing that. And the whole point of having an un-certified, off-the-shelf system is to keep costs down - which is probably more behind the "paperless flightdeck" than anything else, from the airline's perspective. But it doesn't make it wise. So AA gets to pay the piper anyway. Caveat Emptor.