I know Ian very well. I have learned a great deal from him. You need to read Foundations of Physical Preparation and How to write Strength programs. Ian knew Charlie very well but you would be doing a disservice to Ian to think that he adopted too much of Charlie’s methodology. Ian was more a peer of Charlie than a student. Ian was the guy who popularized tempo numbering. He and Charles were quite close until some before some bad blood over a joint project. Ian trained a who is who of the Rugby world. He is easilt one of the best strength coaches on the planet. If i had to put it into a nutshell, Ian believes in injury prevention, training economy, not creating imbalance via training, and organism strength. The only way you can really understand him is to read him or do a seminar with him. Ian is brilliant and zero bullshit. If you are serious about training, he is a must read. I have a lot of Ian, Charlie, and some Poliquin on my book shelves. Angela knows Ian as well ans would tell you Ian is much different than Charlie in many ways.