A few things lead me to believe this is being outright removed.
First, War Mode doesn’t differentiate PvP combat and non PvP combat. The way it works is that once you turn War Mode on, your character is put into a state where you’re always in PvP combat.
This is the reason why you always have your PvP talents enabled out in world. If you remember correctly, in Legion when PvP talents were introduced, your PvP talents only activated when you attacked another player. When War Mode is enabled, your character will just always be in “PvP combat.”
It’s also why some abilities that are scaled down in PvP combat read it’s PvP combat tooltip in War Mode. (i.e it’ll read less damage for some abilities that deal less in PvP)
Your PvP gear in Shadowlands also works that way. It’ll scale upon entering PvP combat, but because War Mode always identifies you as being in PvP combat, you’re just always scaled up. If you turn off War Mode, you’ll realize you no longer benefit from your PvP gear or PvP talents until you actually get into PvP combat.
Going off the interview, he states the plan is for PvP gear to not scale in War Mode, and because War Mode already puts you in a perpetual state of PvP combat, how is it going to determine when you get into a fight with another player? My guess is PvP gear will be instanced lock, similar to how stat templates worked in Legion and worked only in instanced PvP.
You’re right that these are assumptions, but they’re atleast educated assumptions. I feel like he would’ve just said, “the plan is for it to only scale up when you fight a player.” if that’s what he meant.
Well of course, that or until they complete it on beta. I’ve been logging into beta every time a new build is released, checking for this.
I’ll post about whatever it ends up being.