Combeferre nods along at the discussion of how the Labyrinth may be used, and who's most capable of doing it. He knows he's not going to be the first person asked to use force, and he's shamefully relieved. Relieved that his own lack of skill and instinct spares him this. It's not fair to put the burden of conscience on Bahorel or Enjolras, even if they're willing and able, just as it wasn't fair that Enjolras was the first to react to Le Cabuc. Combeferre would have killed Le Cabuc, he knows that; but he also knows he'd never have been the first to reach the man. Others would always beat him in the race to bear that weight.

Which may be why he says, "We might also get him to the Labyrinth by trickery, though I don't yet have a specific plan for how. But yes--we can take it in shifts to watch the doorway. It's outside business, but will that matter once we're not in the bar?"