That siren always been prominent, even on the original stereo mix. Just a weird, risky thing the band tried.I’m listening to Leave at the moment and will say that the swirling effect is a bit too much but I don’t hate it. It does sound quite a bit better, more expansive using the Auro-3D upmixer.
Has always worked for me. Brings a grin to my face. I think Scheiner handled it fine. Just put it in the surrounds, instead of the fronts.