John, That's excellent advice bud!!
From I've found Alex, the Core layer is at it's best you're very active in cooler weather, and is very, very good keeping me cool when hunting hot weather. It really moves perspiration!!
But, When I'm not moving, and it's cold, I wear Traverse against my skin. It's cozy warm against the skin and dries extremely fast when you do sweat in it. It can't be beat in my opinion.
I think if you didn't wear the Core against your skin when you have to stay warm, you'd be better off bud.