Rx lens clip for ballistics glasses

I bought some ballistics eye protection from ESS for range shooting, only to find they don't fit my face while wearing prescription glasses. ESS does sell an Rx lens mount for $30+, but you also need to take it to an optometrist to fit, cut, and mount your lenses. At the end of the day, that's a lot of money just to get prescription eye protection.

So I modeled a part that will clip existing prescription lenses to the inside of my ballistics eyewear. The ones pictured are ESS ICE glasses. Obv