I don't bank with mine. I'm not sure it would work with regular shavings, seems that it would be like prodding a foot into a pile of feathers.
Our 8 mo. Percheron X colt has cast himself a few times when he tries to roll too close to the wall. But that's only because at his size, the stall looks large enough (to him) to roll around, but it's not. To his mama, she doesn't try to roll. She'll lay down and stretch out, but haven't had any problems with casting (knock on wood).