I have been to one of Tony' seminars, and I highly doubt that and of the mentioned "antonio cobas, britten, tamburini, phil irving" have the background, training, and experience that Tony has in the theory of motorcycle handling dynamics.
There were very few questions asked at the seminar that he didn't answer, starting the statement with "I conducted a controlled study of that and wrote a computer program to graph and study the results". He shows the class a huge array of computer programs that he has created to study, explain, and predict how changing various factors will change the handling of a motorcycle.
There is no where else that I know of to get this type of training other than one of his seminars. They have been attended by engineers from all the major manufacturers. From what I heard, these Engineers sit quietly and never show any weakness to each other by asking any questions, then they corner Tony during the breaks so that no one else can hear them and grill him endlessly.
I flew 1000 miles and stayed 2 nights in a hotel to attend his seminar. It was well worth the effort.
Rick Denoon