Brennus can still apply additional pressure to Florian's blade after he goes through with the initial attack though, even with both hands outstretched. Actually, he could lower Florian's blade low enough to attempt a stab to the head with his own.

Not to mention that my point about Brennus being capable to quickly disengage still stands true, so i'm rather skeptical in regards to whether the grapple will be successful or not.

EDIT: ninja'd by Melon