Interesting discussion. I rarely get involved with this type of thing and usually prefer just to read what others have to say. I applaud the forum owners for allowing this material to be presented to give their subscribers different viewpoints. Personally, I like Paul Wilson's methods and they pretty much reinforce much of what I am already doing. This article prompted me to study further the background of the Iron Byron. Paul's is not the only one however, as Mike Bender has a similar system under the name of Megsa or something or other. They appear to be very similar in nature, but I have not read or tried the actual products. Many golf forums being proprietary in nature, often times will go to great lengths to discourage input from other entities that might conflict with their own agenda. That does not seem to be the case here.
a side note on the hip slide. I believe that there will always be elements of both, there has to be. I agree with Paul that it being something he does not intentionally focus on as it occurs naturally. If you close your eyes, make a back swing with passive arms, initiate the down swing with a hip turn and open your eyes after impact, you will note your hips have slid in that direction. The angle of the right knee will be pretty much the same as if you intentionally slid your hips to the left. If this does not occur, you have swayed to the right and left too much weight on your trailing leg as has been pointed out by the last poster.