I keep an eye on that thing - though I don't have an iPad.
I know people love to hate gimmicks and consumer-level stuff, and to make almost apocalyptic claims about the pro-market, but what's consumer stuff now was cutting edge not so long ago.
48 tracks of audio on a friggin' tablet, how awesome is that. Don't have to like the idea of mixing those 48 tracks on such as small screen, but I can see potential integration into a larger set up.