Also taking your glasses off before you raise your bins means you can’t actually see what your pointing your bins at. You can no longer see your target.
I’ve been using glasses for over 40 years and bins for 39. At first there were no bins that worked well with glasses. What a joy it was when bins started being manufactured with long e/r and I no longer had to faff around taking glasses off, trying to hold them and the bins while trying to locate a bird that had meantime moved.
Haha, I had forgotten just how bad that used to be. Very annoying when friends without glasses were watching a bird that I couldn’t pin down in binocular view.
Sounds like it'll be something to consider in the event that I ever require spectacles. However I don't have a problem sliding my sunglasses up onto my head and positioning my binoculars even if I were in a hurry to do so.