I used to play fs with only keyboard.
Then i got the gamepad i fell in love with (gravis exterminator).
I sort of sucked at accuracy with the joystick, until i just sort of got better, then next thing i know, i was awarded the ace medal.
Then i moved over to mouse, supremely accurate, like everyone says as the sniper, and also good for spraying a target with automatics
I don't see why you can't bank with the mouse?
It's the exact same control scheme for basic movement as the keyboard and the joystick.
Anyway, you can steer left right up and down with the mouse, keyboard, and joystick.
You roll your craft with two other buttons.
So i don't see how the mouse wouldn't apply to no banking anyway.