"I'm hoping to surprise myself," Porthos answers, his footing surer now, muscle memory of another body mingling with what he's learned of moving in this one, now that he's focused on Aramis rather than on his own shortcomings. He presses on, very aware that his friend isn't giving it his all, but not about to call him out on it either. He's enjoying this shred of efficiency he's feeling too much for that.