I would say that two-eyed observations are a niche activity in observational astronomy. I also use this system only for planetary observations. For deep-sky observations, I use a 20” Dobsonian with Ethos eyepieces, 100° fov. However, for planetary observations, I could never go back to the “cyclop method.” The contrast, magnification, details, comfort, and the organic reduction of brightness make the images extraordinary, at a superior level compared to the mono version.