I grew up hunting in wool. Heavy wool pants that would weigh 20 lbs when you took them off at end of rain soaked day along with heavy wool sweaters. They were warm and quiet but normally too warm for the longer/steeper hiking I do now. Worked great for coastal blacktail sneaking through the woods kept you warm even after soaked with rain and 35 degrees you needed the warmth. I still use merino base layers but as others outerwear has made major bounds I’m not one to be stuck by what did work. You don’t see mt climbers wearing wool anymore either.