In the video below the user is seen loading up Pokemon Rumble U and using his amiibos to call for help in battle.
Why hasn't this happened sooner?
Tons of details and 14 screenshots of Persona Q: Shadow of the Labyrinth, meticulously recorded from Atlus' 2-hour stream of the game on November 20th. Featuring lots of specifics on how the worlds of Persona and Etrian Odyssey will intermingle.
...no Link, you're not fooling anyone.