For the ground lenses I went with the LST active silver version. These lenses are photochromic, so they become darker as the light outside becomes brighter. When it was darker out, this worked great, but in intense direct sunlight, I would still prefer normal sunglasses lenses. In the forest, however, they adjust fast enough to the changing light conditions.
Ground lenses do have their limit when it comes to the prescription. Here, is where my optician had to do a little bit of finagling. With a -3.0 and -3.5 prescription like mine, the lenses become so thick that they no longer fit in the frame.