I've used it on and off for about a year now. You have to have the appetite for the large risk that it requires usually for the breakout trades in the methodology. For fades, the risk is more manageable. He obviously walks the walk with being the largest crude oil trader in the business. His book was very enjoyable and has some other good ideas besides ACD. He did a lecture series at NYMEX...here it is...pretty entertaining stuff: http://www.clicklive.com/NYMEX/symposium_2003/index.htm

It definitely warrants more exploration on your part as a worthwhile strat.