Benefits are blacking out items and it's removable at a later time.. Have my side molding and emblems done. Many people do rims. Check out dipyourcar.com they have videos on it
removable if you dont like it. Cheap way to black out parts. Not in a glossy finish, only flat. even if you use their glossifier it will become dull in appearance.
good to know, i read awhile ago some tire gel also does the trick(black magic?). I did my wheels in copper PD but grew out of it once it became dull. If they made a true gloss, it'll be a game changer