I own one piece of DPM, which is a long waisted vest with four large pockets, button front and a flap in the rear hem for stashing gear. I wear it on occassion for hiking in mild weather with the digicam. Own a couple of US issue M65s, but rarely wear them, preferring to wear OD or plaid, even when bow hunting.
When did wool go out of style? Best fall and winter bush clothing I own is wool. I don't mind the smell when wet, won't melt when near a fire, it keeps me warm, is very quiet and I can pick it up reasonably priced used.
All life is subject to the laws of Nature, or to be more precise, the laws of our CREATOR.