Doesn't phase me do what you want. But if you took it to a mma gym then you would know if it stacks up to a trained grappler who may not give that instructor any leeway. Most seminars you have to be a bit carefull of compliance. It is exactly something we do. And sometimes we dominate and sometimes we get owned. So that we do experience it for ourselves. Just because someone can throw a bunch of his own students around doesn't necessarily mean that the technique works across the board. And no I am not going to Adelaide any time soon.