Have you ever had a latch and wrap ball python bite? Have you ever had a ball python bite you and NOT LET GO for 5 minutes, until you finally jammed a pencil between its jaws? Only to have it immediately look around for another way to grab hold of you? It's a very, very different experience from 99.9% of ball python bites. And I'm 99.9% certain that that particular snake felt very good about chomping on my warm, deliciously bloody mammal finger that day.
Okay. If the OP said he feeds in a separate closure already, than that's what he does. And I read too quickly, so it's my mistake.
That said, I handle my ball pythons quite a lot. I have over a dozen of them. I have on more than one occasion been too lazy to remove a particular snake from its enclosure for several feedings in a row, only to have those same animals come shooting out in a very aggressive manner whenever I open my tanks/tubs, even on off-feeding days, while the rest of my collection ignored me in their usual manner. It's more pronounced during late summer. I have gotten a couple of hopeful feeding strike bites from my black pastel and het pied males as a result. They're not rocket scientists, these two, I admit it. But the feeding strikes stopped a week or two after I went back to separate enclosure feeding.
Most of the reason people feed in the same enclosure is simple convenience. It's a giant pain in the neck to do separate enclosure feedings when you have more than, oh, 10 snakes. Logistically it's impossible for large collections. But if you have one or two animals, and they are primarily pets and you handle them frequently, it's worth considering. Especially if they are already "nippy".