I've seen it done and the ones I saw and the guys I spoke to about it said "it's like looking through God's eyes". BUT the rig they had to mount them together looked pretty cumbersome and not something I would want to pack around. Also, I would imagine getting them set up would not only be a pain in the butt, focal and power set for each eye, but it would also seem, to me anyway, that it would be highly individualistic as well. You are also going to run into collimation difficulties when trying to pair 2 vari powered spotters. I know with my Swaro 65x I can look all day through it right eyed but if I try to use it left eyed with the same focal adjustments I get a headache pretty dern quick. Your results may vary. Alternatively, you may want to look into the newer lines of VR Bino's. in the 20x range.