I too wonder if this 'floating image' sensation happens when binoviewing 2 RKEs?
It does happen using two in my binocular telescope. It is not as pronounced as using a single, but it definitely is still there. They are pretty comfortable in bino mode. Still have the same eye placement requirements, but for those of us that use them frequently, it is not much different than having eye placement requirements of a Televue Radian or other long eye relief eyepieces. My 34mm SWA can do similar weird stuff if I don't keep my eye sufficiently away from the eye lens.
I frequently Barlow these which puts my eye relief even further out unless I use my TeleXtender or powermate.
The 45 degree AFOV appears much wider to me with the floating effect. It's as if the view is almost ready to spill over the edge of the eyepiece - like a cup of water filled to the very top just at the point before overflowing.