Hi! Wanna purchase a genuine m65 field jacket in purpose of hunting, fishing, etc during the winter season. Here in my country, Spain, winters are around 32°F. My idea is to add a liner. Do that jacket complain those activities. Is a warm jacket? Durable? Please better if you talk me sincerely and about your experiences on the U.S Army with the jacket or simply as a M65 jacket owner. Regards!