Put 1000' s of arrows through 3 different Legacy' s & and Icon w/ no problems whatsoever.

Is it neccessary? nawww.., but I it does make for slightly smoother draw IME.

I also like the fact that is more compact and built like a tank compared to a normal cable guard rod (carbon or otherwise). I' ve had too many cableguard probs over the years..I don' t trust them.