I have been
there but the results weren't the best...
However, just remembered that with the use of the LBV might be easier.

Nikon could easily do it but I wonder what are their thoughts about spotting scopes with binoviewers since still didn't produce any...
PS: - more than 30 years ago, my first scope was a Nikon ED60 20-45x, presently I'm using a Swaro STX115 (30-70x and 50-120x), and
developed a way of using a binoviewer with it - 56-129x, using the X115 zoom, but with more 5.8% of TFOV of the X115+extender at 50x and AFOV similar to the X115 at 70x!!!