[And despite Leo's misgivings, Sebastian doesn't end up being too much of a bother. He stands to the side so he won't be in the way, watches intently (hardly even blinks, really) with a concentrated look, chin in his hand. Obviously very interested 19th Century people... Then again, maybe it's annoying just to be so closely watched.
At least the few questions he ends up asking aren't completely inane. "Is there a benefit to doing this instead of (alternative method)?" and the like, mostly.]