You can apply the generator to a fill layer, add a black mask, and use Color Selection or Select by UV to rapidly texture different parts of a complex mesh. SimpleDiffuse vs. Standard Diffuse Maps Create Textures in less than 10 minutes - SimpleDiffuse

The generator includes built-in features for:

It automatically adds volume to your model using curvature and AO data, meaning you don't need to manually paint every shadow or highlight.

Adds a glow effect to edges, which is particularly effective for organic or magical assets.