In the manga chapter 322, Escanor and the other member sins are fighting the demon king. We can see that Escanor is using a few power skill that require "The One" mode. For example: "Divine Sword Escanor" and "Divine Spear Escanor".
But when the demon king attack Escanor, it's appear that Escanor does take damage from him.
Isn't using "The One" mode any damage he receive is not harmful for Escanor? We are talking about the "invincible incarnation of power". So does it mean currently Escanor is still not using "The One" mode yet?