Just created these. I was tired of trying to find torn or ripped metal photoshop layer styles or even just torn/ripped metal. I made the texture of the ripped metal in ZBrush and then created a tiling texture out of the file. The effects that I was able to come up with are really quite extraordinary. I highly suggest playing with the colors and overlay modes within the styles to get other looks.
Please do comment and let me know what you think of them.
Also I would love to find out if you use them - so please do post links to your work!