WADR, have you considered your own perspiration as a source of moisture to dampen an interior lining??
[The product known as "GORTEX" was specifically invented to deal with the problem of perspiration, so that its vented through the fabric, which still keeps moisture in the form of rain, or snow, or sleet Out of the fabric.]
I once got caught in dropping temperatures one morning, wearing several layers of wool clothing, in high 50s. temperatures. I was fine, until the winds came up and the bottom dropped out of the thermometer.
I ended up putting a "Plastic " rain suit on over my wood coat and sweater. The plastic stopped me losing body heat, but the inside of the plastic "shell" was coated with water, and my wool coat and sweaters were soaked with my sweat when I finally got to the car, and got in out of the wind. I turned on the engine and cranked up the heater. It took a few minutes, but I finally stopped my chattering teeth. Then I stripped off the rest of the wet clothes, down to my flannel shirt, and drove out of the woods. I found a restaurant and ate a hot meal, and drank lots of water. Then I went back to my motel room, took a hot shower, and went to bed. The Hypothermia I suffered left me exhausted. I now use a parka that has a metallic fabric liner in it, that reflects body heat back towards you. The outer shell stops the wind, and sheds water reasonably well. I have a plastic Poncho I carry in my daypack that can go over the parka if it really begins to pour.
But, it gets a lot colder up here where I hunt, than where you usually hunt, RB. I lost my love of wool as an outer coat material many years ago when I was freezing half to death walking to school with such inadequate clothes, in zero and colder temperatures. I am told that there are some brands of wool outdoor clothing where the choice of wool used, and the tight weave does a terrific job of keeping you warm. I haven't seen this yet. "King of the Mountain" is the brand that comes to mind, if that might be of help to you. :thumbsup: