I have the Rudy Project Rydon set.
My Rx is -5.50 and -7.25, and I need progressive bi-focals to see what I am doing up close. In other words I have very weak eyesight! I can barely see the wall chart! Also, I needed the high-index type of Rx lens material.
I went to an optometrist who knows the Rudy Project product. He spent 3 hours with me, explaining the need for focus on far targets and close targets, progressive bi-focals, high-index material, curvature, all combined into one lens. The progressive bi-focals were non-negotiable, without them I can't focus on things up close like reading a WSB, loading mags, or anything fiddly with my equipment. The optometrist also explained the curvature issue with the Rx lens. In the end, I received an excellent product and can wear them all day, all weekend, without any issues. Also, the Rydon set includes different colored safety lenses which I switch in and out depending on the daylight.
At least chat with them over the phone. If you don't need bi-focals that'll make things easier.