I seldom use a scope cover at all except for "protecting" the scope from scraping against high grass or brush, or if I am hunting in a heavy rain or blowing snow when the lenses migh foul up in a hurry. I have tried several styles. Flip-up, bikini, slip over, etc. I prefer a simple slip over cover. Easy to remove quickly and inexpensive. As for "see through" .... not a new idea. Been around at least 40 years. The only ones I have ever had were nothing more than a plastic disk (amber and clear), and were pitiful optically.