I too am a long timer user and fan of Inkscape .. I'd love to know more about your flow/process of using it to design websites .. got an inclination to share the details?

I think a lot of the power of Inkscape comes from harnessing the abstractions of SVG. I've used it in the past as a container for GUI elements, and as long as you name things properly and maintain a good order of abstraction, using Inkscape to create SVG that can be parsed directly into working code is a thing of joy to behold.