My bike's radiator has a few dings from little rocks being flicked up etc. Other than dirt bikes that need serious coverage for their bits, I am assuming any radiator guard is for looks? Is there possible serious damage that can be done to radiators if a largish thing hits it? Also, will even purpose made guards restrict air flow to a certain extent. Has anyone added one and did you find it worthwhile to spend the money on what is basically a piece of mesh? Radguard is $179 for the VTR250 guard... Are they kidding??