Hi Erik and welcome to Birdforum.
Me and Troubadoris use Zeiss 6x18 monoculars for ultra-close observing and have done for many years. When we first bought them we did try using them for quick views of more distant objects but aiming them accurately is just not as easy as lifting a pair of binos up to your eyes. And although we use the Zeiss monos for observing some insects, following flying dragonflies or butterflies with them was something we found impossible and flying birds were not a great deal easier. We love our monos and use them a lot but they are no substitute for a pair of binos.