Thanks for your input! I asked a few people, got some breeders' opinions and, in general, the more experience they had with snakes the less likely they were to recommend feeding in a separate tub.
Plus I was also concerned about handling a snake/moving it around so soon after it's eaten? I'm not sure if it's an issue, but it seems like it could cause problems. I wouldn't want someone chucking me around after I'd just stuffed my face.