Asking as I was down on the Skyline heading to the Blue Ridge past May, and there were a few wanna-be SOA members riding by on baggers w whips similar hanging about 3' off the throttle side grip. We saw 'em ride by and were laughing as if they even knew how to corner, catching something would produce catastrophic results.
I was later told that the whip had a weight integrated into the end to hit cars and other bikers.
Yep, well, there are makers and users of the GBW that install weights(usually metal skull beads) on the ends of the tassels. Just the weight of the 'unskulled' whip is enough to catch attention of a driver that gets entirely too close to a biker. That's why they are called, Get Back Whips. This is my first attempt at one and it's only 35" long, tip to tip, so it's definitely for use in an extreme emergency.