I just got Ghost Armor on my Lumia 920 screen. As a staunch SGP fan, I was dubious. I cannot stand the ZAGG orangepeel effect common with most wet installs. I ripped a Skinomi off my phone after a week of waiting for it to "settle"--horrid product. I have always thought wet installation products were almost gooey even after weeks of use.
Ghost Armor is different. Looks and feels just like glass. No stickiness at all 12 hours after installation. No lint gathering at the edges (which are darned near invisible). When the guy at the kiosk handed my phone back, I thought I had made a mistake and was in for yet another disappointment. Microbubbles, streaks, orangepeel, all the usual suspects were present on my screen. However, It became very clear (quite literally) that Ghost Armor was superior within just a couple hours of installation. Almost all the imperfections were already gone. This morning I have a beautifully protected, perfect, smooth as glass, UNSTICKY screen with brilliant colors and no rainbow effect left by most dry app screen protectors!
I came to WP Central ASAP to post my experience and encourage others to spring for the extra $$ and annoying trip to a mall to get Ghost Armor. I cannot imagine using anything else on my 920's curvaceous screen. I'm now a believer, and I can rest assured nothing will scratch it up.