As I'm overall not a fan of motion controls I'm of course going to try playing the game with the Pro Controller. However it's possible this'll be another Splatoon scenario where motion controls for once in their life are actually superior to traditional controls. Though Splatoon's motion controls are just for aiming and the game otherwise plays traditionally, whereas ARMS is controlled almost entirely by motion. Moving, punching, blocking, and grabbing are things that'd be done a bit faster and more reliably with sticks/buttons, but we don't yet know how you're supposed to curve punches with conventional controls. I see this being where motion controls excels and makes them worth using over standard. We'll find out for sure next week!