You know, it occurs to me that their dynamic will probably be a bit different and we should probably be roughly on the same boat regarding that as well.
Since they won't be master and servant but guardian and ward... thing, I'm thinking Sebastian will be more in charge? None of this deferential stuff. I could also see their relationship being more affectionate - for lack of a better word - since it's not a business deal this time but more born out of interest, at least on Sebastian's part. On the other hand I could also see the snark levels as being mostly the same.