Torn Paper Dissolve Shader

I did some quick browsing on the asset store for a shader for torn paper or posters, with no luck. I'm looking for a dissolve shader that:

• Supports a black and white texture mask that, when applied to an object, dissolves/creates holes in it.
• Isn't an animated dissolve.
• Supports normal maps.
• Supports specular maps.

In other words a standard shader with the added option of a black and white texture mask field. I'd love to find one that can create results like this:



If anybody knows where I can find such a shader I'd be most grateful!

 

Why doesn't the standard shader work when set to cutout or fade?

 

Hm? I know that you can use both for textures such as wire fences with black representing areas that will be cut out, but I'm referring to shaders that let you dissolve parts of a model's material while retaining the normal map and specular map fields.