Beyond style, there are a couple of real-world benefits to the glass roof. First, the Vanceva® glass panel attenuates noise in the 1000-6000Hz range by up to six decibels. That's a lot, as dBs are a logarithmic measure, so six dB is twice as quiet as a standard as a metal roof. That 1-6K frequency range just happens to be where a lot of voice action occurs, so conversations inside your Glassback will be easier. The glass is also excellent at blocking out UV and Infrared radiation, due to it's metallic layers. You'll have nearly the same experience as a convertible, without the noise, or the sunburn on your melon. You may have to rumble up the exhaust a bit to get through that noise attenuation, but that's nothing a couple Flowmasters can't handle.
Thanks for the tip, Jason!