Actually, just a shade of meaning here. Wool doesn't warm you, either wet or dry. Your body does the warming. Wool acts as an insulator, but feels warm because it slows the movement of heat away from your body.

The issue for me all along is that the body needs to continue to warm the water (sweat) that remains in the fabric, whether wool or a synthetic fabric. The thing in my book that sets polypropylene apart from wool and Coolmax is that it is hydrophobic as a normal property, and transports water to another outer fabric without retaining it itself. It also has less thermal conductivity than wool, so is supposed to provide better insulation properties.