If it stand still for a while with the engine going then yes, when driving its not an issue. It gets rubbed off on the ground before it really gets to settle. I am more irritated that some of it finds its way into the back of the body shell, but for the wonderful trumpets of doom sound, its worth it hehe.
But whenever I have had it out I always clean it up so its not really aan issue.Nothing a baby wipe doesn't remove with a single swipe. I swear, those things are magical. I don't know why people dare using them on babies, they can take off sticky oil mxture without issue. Thats kind of scary.