I recommend neoprene socks as the first experiment with vapor barrier technique. Diverís Supply sells them for about $10. They weight 4.0 oz. Compared to 2.7 oz. for UnderArmor synthetic socks or 3.6 oz. for SmartWools socks.
At the end of the day I GoldBond powder my feet and put on the neoprene socks. The foot box on my quilt stays drier. The socks pick up less debris than normal socks if you walk around camp. But the big advantage is that you can wear wet shoes over the neoprene socks without getting the socks wet. While I would not plan a 20 mile day wearing neoprene socks, they are comfortable enough for short hikes. Neoprene socks and trail runner shoes are excellent for snow shoeing.
It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.
- Mark Twain