I know exactly what you're looking for because I went through the same search. Unfortunately nobody makes anything specifically for the Road Glide. Perhaps someday someone will finally figure out a good looking shape for some Lexan and mount it to the crash bar.
The "Air Wings" - like you find on Goldwings - would probably work, but they're VERY ugly:
Hogg Chopps get good reviews and the price is reasonable, but I still think the look is "different".
Ultimately, I saved my pennies and went with the factory H-D lowers. They look great, work great and fit great. Plus the extra storage in the glove boxes is handy. Too bad they're so dang pricey! This is my RG: