My bike has an aftermarket header (I think a Pro circuit) that has no guard. I am sick of burning my pants up and myself during crashes and was thinking of putting on some header wrap since I already have some left over from a car project. It's Vulcan Ultimate Lava Fiber Header Wrap. But I have heard mixed reviews on it's use for dirt bikes. I don't race and ride trails and dunes. What's the disadvantage of using it?