Orion is using the same full page swipe back animation as Safari/WebKit.
I prefer the way Chrome implements it by just peeking out an arrow from left or right edge of the page, and when you complete the full gesture it just changes the page without any transition. This way it is less distracting and perhaps a better accessibility feature to reduce motion sickness.
But please don't tie it to the system reduced motion setting, as I personally don't use the reduced motion in system, but prefer some effects to be toned down, like this swipe back for example.
Another reason why I prefer it is that sometimes I am contemplating whether to swipe back and doing the swipe back gesture while still skimming through the page if there is info that I was looking for, but swiping back full page makes it near impossible to do so.
