The Heard swing is taught as a clubface square to the path swing. Tommy Two Gloves is not keeping the clubface square to the path from my observation which just might be a good lesson for anyone trying to use HSS.
All of the strong grip pro swings that I have observed show the clubhead in a fairly normal position at shaft parallel on the downswing. That position is way more open than square to the path and most likely far more open then most folks who try to use HSS. That Imho is a big reason why many and end up hurting themselves and hooking everything.