The Beetle Bags completely bury the fender rails that the standard sissy bar mounts to as you can see in the following pictures. Hiding the rails is part of their beauty. I don't know how you would alter the bags without really cutting them up. As seen in the last pic, I use the Corbin seat with the bags because it's sissy bar plugs into the seat. The Corbin seat, Corbin bags and Cobra pipes all work together to create a blended shape. (Of course the doll in the bikini helps to complete the shape.

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Totally agree that the doll in the bikini makes the nike look even bettehr taht it does without her. And yes I do understand that cutting might be required, just wanted to see how they look.
I just had a message from a fellow VRCC member that has one with the factory sissy bars installed, pending to see if I get pictures...
Thanks!