Sorry to be so late in responding ... I read the article, and like you pondered its worth. Came up with the same thing you did ... It I ever go steelheading again, I will take the technique with me. I have no doubt it will work, assuming Friend Fish cooperates -- something my experience suggests a steelhead is not likely to do. Tough fish!
His extreme nymphing technique for deep water is interesting and my guess is that that it works, too; unfortunately, it reminds me of cane "pole fishing." Given that alternative, I would prefer the cane pole. I hasten to add that I am not into deep fishing with a fly rod.