I wonder what the battery life is like, and whether they have any automated ways to get them charged and back in the sky. Like auto-landing on a charging bay - kind of like how Roombas dock and recharge.
Typical hobby aircraft lithium polymer battery lifetime is about 5 to 20 minutes. Be ready to swap batteries a few times an hour. They might have batteries that can go an hour, but I can't see the batteries getting much heavier than that.