As I promised in my last post, I want to show you how you can make Layer Validation part of your build process. I'm going to assume you've followed along from last post to make things easy. Again, this is all possible in the VSTS 2010 CTP.
Ideally, it would be great to incorporate this step into the build process whenever you build the solution or Client project. You would do something like add a DependsOn="ValidateArchitecture" attribute to the "AfterBuild" target in the project file. Unfortunately, the same bug that requires you to refresh the Architectural Explorer after each build of the project will prevent this from working as it should. Clearly, this will be corrected by RTM.
Hope that helps!