*apparently
So I'm reading on Gamefaqs that the Knuckles of Eao works at the Gatekeeper. I haven't tested it personally since I've used them at Atheon so I cannot verify. But a user claims it's true
If it is indeed true this will come in handy for those looking for a Chest piece
In the same topic I also read this works at the Siege Engine as well (chest & arms iirc)
-
Works at any checkpoint with rewards in the weekly featured raid.