He holds his expression and stands unmoving even as they head past him and out the door, exactly like his uncle did when he would similarly scowl away ruffians. Once the door's closed, however, he clutches at his chest in relief.

The relief is short lived as he realizes the weight of what he's done. Usually he's embarrassed by the power behind his name, and half the reason he's in Northcliff Pass is that he wants to distance himself from it. While he's not disowned, they probably wouldn't appreciate him pretending he's acting on their behalf. And if any of the soldiers he met back in Cliffside hear of it...

That could go bad. Real bad. The fear coming off him might not be very reassuring to Colin as Faro kneels beside him and puts a hand on his shoulder to try and reassure him, "Yyou're okay. We're okay."