I can see it being useful to have a higher res screen and more cpu power for movie and music production. The ipad is ALMOST ready to replace a laptop for onstage virtual instruments, etc. I'd love the A6 in a non-retina one, personally, since I don't care about resolution that high, generally.
It's not really even that surprising. People go into the metro stations because they're on their way somewhere. Even if you happened on the same people who were going to pay $100 per ticket to see him, it's still not a $100 performance, because it's in a metro station.
I've really liked the aerons that I've had at work. I've heard good things about the leap. I think you can't really go wrong with either, if they fit you.