Which part of the PRC do you live in, Sommer1943? I've seen photos of some amazing landscapes in China (Guilin, Hunan, Sichuan) that would be amazing to view with something like the Sard. Your binoculars have a much easier life now than in their first job, that's for sure... Even with the low magnification and large exit pupil, I can't imagine how challenging it would be to scan from an aircraft, particularly a World War II era one. I've seen the Lancaster bomber from the RAF memorial flight pass by a couple of times, and could almost feel the vibrations from where I was. I've used binoculars from a small boat while tuna fishing (spotting flocks of seabirds) and that was challenging enough.
From memory, the Skyline 7x35 isn't that modern (I guess it's modern compared to the Sard, but...) - I think it's from the 1950s/60s era when a lot of wide angle binoculars were made in Japan. It would be interesting to see how the best of those (eg 7x35 Rangemaster) compare to the Sard.