It's not bad. It IS a pain to set up though. I set up the L4, L5, R4 and R5 buttons for F1, F2, F5 and F10. That way I can use the keys to do menu settings in game:
F1 - View Player 1
F2 - Change Player 1
F5 - Set to defaults (What I did)
F10 - Exit
Setting Defaults gives the game keyboard commands which are not initially set in game. Trying to use Joystick does nothing that I can see.
After that I assigned keys on the Deck to the keyboard keys. Default is WAXD for movement as S is the Special attack(I set that to button B). Setting A to SPACE fires the normal attack. Took a few minutes to figure out but it's all running. I noticed that it's running slow though. The combat screen is not full speed like I remember it. There is a lot of FPS slowdown throughout but it's only an issue in combat. I've seen 8 FPS through 60 FPS but usually it's hovering around 44 FPS. Haven't played with that yet.