Neat....although sad that it's via a subscription model, rather than buying the program outright. That said, what's the point of this? Everyone works off laptops already, even people new to A/V production. Especially in the audio world, laptops are just so much more convenient because you can host 3rd party plugins and other stuff like sample libraries. Can't do that on an iPad, can you?
Actually having equivalent tools on iPad and Macbook, i'd pick ipad for two reasons: stability (newer MacOS versions are not fantastic) and touchscreen (can't map everything)
Now, if only Apple would finally make iDAM full duplex, so that it would be possible to use either ipad or mac as a plugin host.