But you can still get your arm lopped off not saying this stupid, but the quillions are designed for protecting your fingers should their blade come down. Its also for parrying attacks and locking their blade against yours so you can parry effectively not to mention their also good for cracking skulls.
It just looks cool it doesn't have to be completely practice. I can't stand people bitching about it saying it "ruins the franchise" if you think this ruins the movies then screw you, you're a dumbass.
This too