I agree with cooldhaya that it reduces the look a bit, but it comes in different sizes, you get the smallest one, which will not be noticeable from a distance.
But I suggest you to put them on as scratches/scraped paint regions/dents look worst than a small rubber pad on the doors, and also expenditure required to remove it these unwanted "symbols".Isnt it?So its better to prevent it than to repair it in my opinion, rest its your wish,which ever options suites you better.