I remember watching ESPN2 back when they covered NPPL series. The commentator made a hilarious comment saying the referee was having a "velcro party" after calling a 3-for-1 penalty. This comes from the armbands were secured with velcro.
I, for one, enjoyed the armbands. When you pulled someone, they knew they were pulled. Now, if call someone out, they argue they "couldn't hear".