Quoted from btw75:Yes!
I saw 3 pins yesterday that had the stern metal protectors then the plastic pincab things on as well, because the owner liked they way it looked. When we took the legs off these games that were NIB before this, there were indentions and decal scrapes due to the pincab things.
Pincabs are the devil, please don't use them on a newly decaled or direct printed machine unless you want damage.
Good info! I have a couple sets but have been too lazy to put them on.