It would be nice if the evade dodge had its own button, but considering a button layout, i dont think the evade will have its own. You got Triangle for attack, Square for the gun, X for jumping (i think lock on and X will be the dodge) and O for the whip. The whip could be part of the Triangle, with a lock on and joy stick pointed up or down and Triangle. which would leave O available but i would prefer O as the whip.
Honestly i have no idea how the button layout will be.
In past NT games, dodge was simply the Rjoystick, but since NT is using UR3 engine, i dont think the camera will be in a fixed position at any point in the game.