This is more a css/html replacement tool, and should probably be thought of as such. Framework implementation is about code design and engineering, something you should take up on your own.
Regardless, it'd be nice to not have to write markup and css, to me a boring process; a product like this is long overdue. My question is how it fits in with workflow. Who owns this in a group setting; the designer? The front end dev? Do I have to design a page in photoshop before I try to build it in this (in the presentation, the graphics were all ready to go and layout, but it's never like that in real life). It just seems weird to have to go through the process of designing a page, and then designing it again.
I would think it would be owned by the designer and would be used as a prototype tool (as others mentioned before). I would not use PS for anything else other than to create elements to support the design (crop images, special graphics) but other than that a tool like this would be great to get the project started on the right direction and test the functionality on different browsers without having to involved a dedicated dev into the mix.
Regardless, it'd be nice to not have to write markup and css, to me a boring process; a product like this is long overdue. My question is how it fits in with workflow. Who owns this in a group setting; the designer? The front end dev? Do I have to design a page in photoshop before I try to build it in this (in the presentation, the graphics were all ready to go and layout, but it's never like that in real life). It just seems weird to have to go through the process of designing a page, and then designing it again.