So question is, what does this make you guys, and also, to be "legal", do I need a WAC sitting on my lap as casa treat this app as "a fun toy for the iPad" or something very similar..?
Regardless whether it is "legal" or not (my view is the hard copies are required), you're asking for trouble not having maps on standby. I love the iPad - it's a great situational awareness tool and displays many charts brilliantly - however there are a few times over the last 12 months when either an app hasn't loaded properly, the iPad is playing up (less likely) or Bluetooth/GPS isn't working. In those situations I've been very happy to have the hard copy charts on standby.