If only knife attacks were like this. They come in a blitz, usually when you're not fully aware, they will charging you, use their other arm, and it won't be long predictable attack but a blitz of short power stabs that will go through your arm and plenty will hit your torso, face, neck, everywhere.
Yes. And such defense only works, when the attacker does not using tricks, fake attacks, to pull the defender into a trap, to let him expose himself for the following real attack.
Believe me dude it may save you.I saw on the news a Police Escrimador vs a Bus Holduper with a bolo.He forget to carry his gun.He successfully paried the bolo w empty hands(still HAS WOUNDS)until backup arrives.