BFRES Ripper

[Random Talking Bush]

EDIT: Does having the second layer affect the model?

Not always. For the most part it's used for the "Bake" or "AO" maps for models or for something else entirely that I am unsure of (where the mapping doesn't seem to match any of the model's textures). Sometimes it's important (like for Mario Kart 8 characters, where the one layer can be for the eyelids and the second for the pupils), but for the most part it's not entirely necessary, but included anyway just in case.