[And if there's any surprise in the name and the introduction, well, his expression doesn't change-- but there's the slightest pause.]
The King's Musketeers? That sounds very impressive, Mr. du Vallon. Much better than "attorney at law". [Though he quite likes the sound of it, really -- worked hard for it, too. But a Musketeer... not a man of law, but a man of keeping the kind of order the king wants, still. Not too dissimilar, in the end.]