Porthos scowls, because he'd like to see Aramis trying to go fast when everything feels off. But it's not his friend's fault, and if Porthos has ever been good at anything, it's improvising his way through a fight with anything handy. So what if anything feels off? He's not about to give up, or waste time complaining. Instead, he repeats the same move without thinking about it much, because he's already done it once and he has to trust he won't fall on his arse for doing it again, faster.