Reminds me of me when I purchased Gary Fong speedlight modifier.I use my hoods on all glass except macro work, then I make sure I have protection for the front element in other ways. I am a firm believer that mitigating flare comes from distinct shapes designed for a particular lens. Then there is the issue of drops where a rigid hood will offer more protection. All in all, I just don't see this being a good way to spend my money, or for the sellers, it's very ho hum like their caps. Quite boring and hardly revolutionary.