After playing it on the Wii U I have to say that Enjoyup did a really good job.
Game can be moved to the gamepad or the TV on the fly and all the actions and items can be mapped to the gamepad.
The only "thing" is that I can see is some people having problems playing it on a small screen because everything on the screen isn't that big.
What caught me as odd is that when you play it on the gamepad the screen is already zoomed and you can zoom in even more but when you play it on the TV you can't zoom in.
So far so good though, totally worth a look when it's released tomorrow if you're not a PC game person.