Should? It's a vague sort of answer, and Lancelot wrinkles his nose at it. There's no real reason Faolan should or shouldn't be here, but it's up to the man himself.

"I'm not sure Sylvia would approve," is what he says finally, "but I thought it best to keep an eye on things. Just in case. I think that excuses my presence."

Even if he is, well, also drinking. He picks up his glass to make sure he's keeping track of it, takes another sip. In a way perhaps it's a good sign if Faolan is attempting to be more social? The company might be dubious but surely it's better than his isolating himself?