If you're creating textures with substance painter it is better to use the substance painter baking setup. It's simpler and it produces the result that the built in texture generators expect.
hello, I’m new to Zbrush so I’m still unpacking everything.. when I’m finishing a sculpted character, would it be more effective to do UV’s in ZBrush and bake displacement maps there, or move my meshes to Maya, unwrap then create textures with substance painter?