I have Galaxy Nexus with Invisible Shield Maximum Protection. You know that Galaxy Nexus has plastic back cover, but the film went well with it. I think it would be ok to the metal back. See the installation guide on the web and take your time when you apply it. Agree with you, I also hoped iPhone 5 with aluminum back in November last year before I bought my Nexus.
9/12/12 at 6:26pm