I work in the optical biz. When you have your prescription lenses made, just tell them you do not want polarized. Just because the frame comes with polarized lenses does not mean that they will only make them polarized. If you are not going with polarized, I would recommend a mirror coating to help combat the glare. There are some some subtle mirrors out there. It does not have to be the big bright silver mirror, or if you like that you can do that too. Polycarbonate lenses as well as hi-index lenses are big producers of glare, so you would also be doing yourself a big favor by adding a back side anti-reflective coating to go with that mirror coat. It can get a little pricey, but the results are worth it. You may even be able to use your existing Maui's, if they are able to hold prescription.