i think it would be a great idea to be able to have markings on your characters, and then instead of having to either have markings OR scars, have scars as a different category in character creator so you can have markings with scars on top.
That way you wouldnt have to remove your markings from your characters in order to have scars on after a fight and things. you could keep your markins, just lay the scars over the top.