Well, I mean if you look at the shield bash animation and imagine it without a shield, sure looks like you're stunning the monsters with a firm pimp hand to me.
Plus if the thing Shippu pointed out on Page 1 is correct, it would make sense to introduce the Emperor's new shield with the Garo event. Having Garo be tied to PLD is a bit odd since well...he's never had a shield. So giving that option makes sense for the Garo Collab.
