[Zack The Ripper]

Generally we use only the lower mesh to cover everything below eye level.

I think you are referring to the masks that cover the full face, and in this case I would avoid them. You can use safety glasses underneath, but still, there are much better options.

Certain JT masks are good, and there are many full-seal goggle/ lower mesh combos available that work much better and provide a little more safety.