This is a very interesting question. I tie mine as you do, by the book, but I would only fish them typically in a choppy current because the stay up. For most other water I choose the X-Caddis because the wing stays up and the rest of the body can puncture the water tension on top and ride just below (seems to work well round these parts). Just remember that you can always trim away the hackle stream-side but you can't put it back on.
Born to fish, Forced to Work!
Please deliver me to the weekend!