People are asking if snow/ice is hard on a fly . Answer, yes. Dirt is hard on a fly line. It is a soft rubbery plastic. Makes sense. So how does a soft plastic line hurt a metal guide specially seeing how it is only touching the guide once in a while. I would think a bad metal guide hurts fly line worse!

One month using it 5 to 6 days a week Sharkskin on a T3. Nothing yet!