Greetings!
This is new to me, and just wanted to share it in case someone else didn’t know.
If you press hold triangle, you will wield your weapons, sword and shield for example, at the same time, and if you press again, you will put away your weapon and shield again at the same time.
In the PC world we unwield if we don’t want a beef. It was tiresome in PS world to have to carry a neutral thing on my bar so as not to give the wrong idea.