Has anyone had their snake regurge after being moved back into the enclosure after eating?
I haven't, the guy we adopted the ball python from specifically said he should be fed in a separate container, so we just keep doing that, since that's what he's used too.

I don't think it's a big deal whether you feed in a separate container or in their home terf, I think it just depends on how each individual snake reacts to the different ways.