I learned to tie the full Windsor in the forces and the reason given to us was that a "Half knot makes for half a man". The knot on the Windsor can be made smaller by slight readjustment of it's location or by how tight you snug it up. A great big sloppy knot never looks good. As to the Four in Hand, personally I've never liked it, it looks like a poor attempt at tying a knot by someone who wasn't willing to take the time to leanr a proper knot. Just my oppinion.