Coolness! Congrats man.
Both your and the Put This On blog are interesting. I'm surprised you two hadn't exchanged volleys before.
Perhaps if sport coats had a special pocket on the chest for a whistle coaches would wear them. I used to wear a blazer but every time I grabbed the whistle to signal the boys, my pocket square would fall to the ground. This became particularly troublesome when I wore a yellow square.Quite often we played in mud and I have tired of laundering my silk hankies.