Front End Mask ("Car Bra") for a Scion tC...Yes or No? - future scion cars

I have a 2006 Scion TC necessarily mean that I love you. I managed a piece of rock on the underside of the hood on a trip that cost me almost $ 200 at the dealership to get fixed. I want to cause such damage in the future by buying a mask or in front of the car to avoid bra - which one designed specifically for the Scion TC. However, I am afraid that the material or thing is rubbing wear on my painting. I can not to it if the car is still wet, to make sure it is clean and wax before using. My concerns are valid? The advantages outweigh the disadvantages or vice versa? What other precautions should I take? I have the parts department for its formal opinion Scion - are always honest and a girl who knows something about cars: o) But I want to respect the opinions of the owners of the support of other concomitant diseases such as - thank you!