How does the skill work exactly?
You activate and boom the resources are restored or it’s a channel like dark exchange?
^ This. ^My opinion is that in open-world cyrodiil nothing is off-limits or bad manners. Now in an organized 1:1 situation, I might take it off- but there is nothing wrong with running your open-world build during a "1v1" in the open world. Nobody is expecting you to change gear every fight.