To give you an idea what type of armour you will need to stand up to the likes of Scorpion Evil, on Dragon 2 I have 20mm nylon inner armour with 10mm Ti on top of this on the front and 4mm Hardox on the sides and rear. But like people have said you dont have to fight the spinners, even if you are in the arena in a fight you can ask them not to attack you and we wont unless its a competition battle.