Gu Mo was extremely cautious.
He originally didn't want to really kill Emiya Shirou, and naturally didn't want to rashly put pressure on him, prompting him to summon Saber.
Even though it wouldn't make any waves, to avoid trouble, he decided to snatch away the Sword Scabbard before this possibility could be realized... At this point, his goal was actually achieved. He glanced subconsciously at the furious Ilya glaring at him, wondering if he should tell her the harsh reality.
About the Command Spell being ineffective against him...
Being a Berserker with A+ grade Anti-Magic Power was quite reasonable...
After all, since the Knight King possessed A-grade Anti-Magic Power and had a chance to resist a Command Spell with their will, it was only natural for him, being stronger, to be the same... He would use this explanation if Ilya didn't give up and found out that neither two, three, or even more Command Spells worked.
