Can't say I have any tips, the process is straightforward, peel off the rubber covers (carefully), then unscrew the tiny holding screws and pop off the sleeve.
I actually find the eyecups and the eyecup covers OK, no problems there. The focuser is also very good IMO. No complaints there. If you use your binoculars in really dusty conditions you need to protect the focuser, but that's the same with any binocular. Precision mechanics don't like dust and grit. The one exception may be binoculars with IF. They are often more robust, like military binoculars.
If you're talking about the objective covers - right, they are pretty useless. But the Canon has got filter threads (52mm), so you can easily use some accessories for cameras, like lens hoods, filters and lens caps. These are quite useful, especially since the objective lenses are so exposed to the elements. Aftermarket lens hoods and lens caps can be bought rather cheaply. The filters - if you want to use them - are expensive; you need very high quality filters otherwise you might find the filters affect the optical quality. I always use the lens hoods, they keep dust and moisture away from the lenses. I only use the filters in exceptional circumstances, like when seawatching in really windy conditions. The lens caps can be useful for transport, in the field I don't use any lens caps or lens covers for the objective lenses at all.
Well, you might have been a bit clearer then.
Good luck with your search.
