Alpacca 45

Kiwi, I realize I'm on a very old thread, and I'm asking something unusual on a first post, but here goes: Any of the old Swanni workers going to spill the beans about the "secret waterproofing treatment"? Or is the "treatment" just BS to stop people realizing the fabric is just a loden type cloth? ps I've had a bush shirt since the mid 90s and love it, but I'll be b***ered if I'm buying one made by Chinese who are paid 40 euro cents a day