In terms of sorting, "Priority" bags are normally last to be loaded, so they come off first and sometimes have their own bag runner. Not sure I can see Menzies doing that when they seem to love throwing our bags from the pit the way it is.
This morning I flew YEG-YVR on WestJet. 100% full flight. Only like 4 of us in bag claim. I think that was by far the fastest drop I've ever had at YVR (<10 mins after arrival).