My only problem with porting a WiiU game to the 360 using smart glass is you then have a controller and a table to manage. With WiiU, they're the same thing.
I'm not saying it can't be done and I think Smart Glass is pretty awesome, I just don't know if a game that is made with the WiiU in mind is so easy to port to the 360 because of Smart Glass.
That said, I can't wait for ZombiU and Smart Glass.