You have to remember, Force-Walking isn't an every day thing. The amount of energy it drained from someone who spends most his life training in the Force and not the blade... let's just say, I doubt the Warrior could pick up a lightsaber after the ritual. At least, the every-day one.
That's true.. but what if he was protected by his loyal followers and was allowed to recover after binding a spirit.. Assuming he would have to instantly pick up his light saber and fight after he bound the spirit is presuming he is under attack really