Great article. However, I have a hard time imagining that applying a stack of weights onto fabric in a horizontal plane in a static environment represents what happens under wind compression conditions. Yes, there are winds that blast from mostly one direction in a sustained manner, but most of the time, even in a sustained wind, the wind "gusts" and is multidirectional. You did mention how wind "pumps" the heat out of loft, so I'm sure you can see that the static pressure plate model has its limitations.
I too would like to see a Part 2. For a future article, I'd like to see someone explore what else is happening when the wind strikes a warm being in a jacket. For example, the air that is deflected around the sides of the person would also cause some compression but might there also be a vacuum effect drawing further heat away? And what impact would the texture of the outer fabric layer have on heat loss?
And on the subject of wool, I suspect the lower compression was due mostly to the knit or weave. Makes me wonder if some of those bumpy knit patterns worn by Irish fishermen aren't just ornamentation but serve to trap more air and prevent compression when worn under a rain parka? I also wonder if lanolin left in the wool makes a difference in heat loss from wind. Wool fleece, which is not woven, would seem more likely to felt up after awhile and completely lose its loft. On the other hand, felted wool traps a lot of warm air and is fairly stiff so it could make a good outer layer under a water-resistant layer. Maxine