Tank IDENTITY

[Shurrikhan]

Read my whole answer before and think again...

The problem is not being over taken by dps, its by the other tank. And yes its just a toggle but most tank swaps usually happen twice.
Also very often due to tank dps ( ex: DRK + any tank except GNB in Endwalker content ) you will have to shirk even when not swapping because you are over taking the main tank in aggro.

Again. You will not overtake the MT in aggro. If you just. Turn off tank stance. Toggle it off just before you swap out and turn it on again only before Voking back in.

It's an oGCD toggle, mate. One can both turn it off before swapping out and back on, without any cost, before swapping back in.

If you're taking threat off your MT when you don't intend to, there's a much simpler solution than Shirk: turn your damn stance off, OT, until you're swapping in. You only, at most, need 2nd highest threat, which at 10x enmity doesn't take much stance uptime.