Mostly out of laziness, but partly out of curiosity, I'd given up shaving since I left Chicago. I figured I'd just let the adventure-stach go and see what happened.
It turns out that I am still not manly enough to even grow a proper beard. The chin bits come in okay, but the sides are all thin and scragely.
So, courtesy of the hotel's complimentary razors, it went away. So much better now! It was getting long enough that it was starting to rub on the chin bar of my helmet.