I was just down at brucerossmeyer.com Harley Davidson's dealership near Daytona Beach Fla and saw some new goggles that are on the market. They can be worn over glasses, and darken or lighten according to the local conditions. I tried a pair on and they were confortable, but I would wear them under the helmet instead of outside the helmet if I were to go that route. I just looked on their website and didn't see them so they are new enough that their webmaster hasn't gotten to them yet. If you're interested, you can contact them and I'm sure they would help you out. The prices were in the high twenties to the mid thirties.
Yeah, I know it a Harley place, but if they sell something you can use, perhaps you can suffer the harley stuff to get what you need or works for you.
The difference between genius and stupidity is that genius is limited.