Definitely an added feature, but if setup right, it could save a lot of time compared to using a toner kit to track patch cables and wall ports that aren't labeled, trying to find a port that in an 8 switch stack. I can think of numerous times where I could have used this rather than a toner kit. Gimmicky...potentially, but a cool gimmick none-the-less.
CMNO, CCNA R+S