Will Pre applications run similar to Mozilla Prism applications on the desktop?

Will Pre apps run within a site specific browser (Site-specific browser - Wikipedia, the free encyclopedia) which can be launched independently of the default web browser.

Essentially SSB are Web browsers without the menus or chrome and can access only one site/source.

So if Pre Apps run as SSB using standard HTML, Javascript, Css and webkit as the default browser - then what would it take to port the Pre apps to the desktop?

Someone can correct me if I am wrong. But the web/os is essentially a web server sitting ontop of a linux kernel with access to a set of services.