We thought this was coming, but we weren't sure.
http://www.hori.jp/products/wiiu/wiiu_pokken_controller/
According to the official HORI site for the upcoming controller, it noted that you cannot use 2 of the controller while playing in the local play mode. It says that Player 1 has to use the Wii U the GamePad as their perspective.
Feel free to correct me if my Japanese is wrong
http://www.hori.jp/products/wiiu/wiiu_pokken_controller/
According to the official HORI site for the upcoming controller, it noted that you cannot use 2 of the controller while playing in the local play mode. It says that Player 1 has to use the Wii U the GamePad as their perspective.
Feel free to correct me if my Japanese is wrong