Chances..
Well, I havent had a stone strike since i fitted one of Reyno's grills, which was fitted mainly for the look i will admit.
However, a few years ago.. a wheel nut came off a truck ahead of my on the road and took out my car windscreen.. what were the chances.. lord knows.. but for me.. the cost of buying one of reyno's grills were worth it.. if it saves me a rad repair. I win on both counts..
Why tempt luck when the option is there, and if you have the ware-withall..l?