I was wondering if you could post pics of it and tell me if you recommend it
If we're referring to the belkin iris anti-glare shields I would definitely recommend it. Where most anti-glare screen protectors distort and blur the retina display this one is much clearer while keeping the matte look that people like about the anti-glare. If your retina display with no screen protector is 100% then with the Belkin anti-glare is 95% little to no distortion, the only thing I would mention is with a white display you do notice some grain but not as bad as other anti-glare protectors.
I can't post pics right now but there is already a thread on this that has pics. I'm not sure what you mean by slip. It feels just like any anti glare screen protector, nothing like glass but that doesn't bother me at all. You just have to try it out. I like it but some people have specific preferences so just keep in mind it feels like any anti glare that's out there, just a matte feel.
Mine kind of makes the retina display bad but I'm getting used to it