Decals usually are not very durable. Even original 1player screen painted buttons have worn down eventually.
I think if you do go with some sort of decal, you would probably want to spray several layers of some sort of
clear-coat layer over it, to protect it.
Over time, the clear layers may start to wear down.. (depending on use and chosen clearcoat durability and thickness)
but you could always reapply new top coats.