Nope, never! Which is why it's never killed 'em in the wild either.
Just razzing ya'. You've put some pretty good/helpful info up on this forum.
I'd probably take your word for it. Like I said, it's my inexperience talking. I seem to remember the BHB guys saying in one of their Youtube videos that they'd prefer to feed out-of-tub if they could, but they just don't have the time. Hell, I've only ever fed 1 BP, 1 time, so all of my opinion is chalked up to what I've heard. Experience is the best teacher. If folks say it's fine to feed in-cage, then it more than likely is fine to do so. Me personally, I'd just try and keep the rodent clean if I could because that is one thing that could potentially go wrong. Of course, if you feed out of cage, you could stress the snake, so...
If one guy with all of one feeding under his belt says feed outside the tub versus 5 folks with countless feedings inside the enclosure feed in it, I'd probably go with the 5 over the 1.