@underflip - the glass hits the metal piece, but I havent noticed any scratches or cracks; I think because they are properly installed (minimal contact) and my window tint protects the glass when I close them. I am aware the glass hits the metal, its not a big concern to me because the roof racks are only there seasonally so I dont expect too much wear and tear with the metal/glass contact.
I am not a roof rack pro, but I believe Yakima and Thule make rain gutter style roof racks, none that fit the Koup yet...I know for sure you can always have a roof rack pro
drill a hole on your roof to fit a roof rack

, I would think they're not as easily removable.
@unsurestephen - i was a thule fanboy, but Yakima is the only thing that fiits at the moment, plus the roof rack dealer had an awesome yakima rack + installation deal...$aving$ > Thule
@ Everybody - Sorry for the late response to all that are messaging me, most of you have the same questions, so I hope I answered it here. Have a great day everyday everyone. peace.