After having it on the wall, I am changing my rating. It has pulled away from the wall in many places. I am using super glue to keep it in place. 
This fake tile looks real. I am about halfway done putting them up. It is quite easy to apply, but I found that you need to be careful when peeling the backing off not to rip the "grout" lines. It is nice that you can remove the tile when lining it up and try again.