no not supported, that means people who already has 1 of charfade's weapons get 2 different class weapons for free, it will not make it interesting because there is nothing interesting about it, people will use it to their advantages.
@above like i said, people are just using it to their own benefits and for their own selfish purposes, if you want all of the charfade items, then work hard and get the items yourself, making them mutating is just plain wrong, it will not help the game in any way.