I saw that the page on the ALSA website has been changed to say that the metallic wrap product "can be brushed, rolled, or sprayed on almost any surface".

Aside from removing a few emblems, hood-mounted windshield washer nozzles, etc, to be able to get some of the product on ALL areas of the paint, application shouldn't be all that difficult.

And except for a few areas on my car that come to mind that would be most easily reached with a brush, I'm thinking a foam roller would probably make for the easiest, most even coating.