Y'know, I look down and see biners in funky positions all the time on full-length slings, and it eventually got to me, which is why I started using rubber bands (pony tail keepers, actually) to hold the sling in position on the rope-end biner. Then came the "news" that you could manage to clip such set-ups in such a way that the sling was not attached to the biner except by the rubber band.
So this leaves me with two highly unlikely but dangerous scenarios: one is that a rope-end biner that has flipped into a bad position somehow fails to reorient during a fall and either cross-loads or unclips, and the other is that I somehow manage, without noticing it, to unclip the rope-end biner.
In a situation like this, the decision is clear to me. One situation I have complete control over and responsibility for, and the other situation I have no control over. The rubber bands stay on. (Well, maybe not, if enough of my partners refuse to use my draws...)