Some Background:
ASP.net MVC is primarly a paradigm shift in the way you structure and develop ASP.NET applications. Shifting from a "code behind" type of mentality to more of a standard MVC Ruby on Rails like mentality. I applaud it's efforts as a simlifying tool towards unit testing ease and seperation of code (although the html inline code could be debatable).
Expression and XAML is a way to describe the presentation layer that can be simple for designers.
The question is:
If we are to use ASP.NET MVC in developing our next website how does the design team that uses Expression and XAML supposed to create (V)iews or integrate into the development flow?
More specifically can Expression users still operate in an ASP.NET MVC world?
Note that the pages in Expression's model use a code behind paradigm as well.