Shield UK was great about refunding me for the two I had bought directly (one still unopened) after the lens showed bad scratching after a couple months of use and rain exposure totally killed it. Was awesome to use until the issues popped up. Can't trust for edc. Currently happy with RMR type 2. Even if shield were to come out with glass lensed, waterproof rms, it still would likely not be RMR type 2 durable. And might need to be slightly bigger/taller, obviating its one big advantage. Never say never though, lots of room for progress in slide riding red dots.