Yes, I wanted to use both.
I have to goals in it:
1) remove the need to modify MSBuild scripts when new DLL is to be added for analyse
When I have a ItemGroup defined like this:
than I run something like this:
I don't need to modyfy anything to include new DLL into to FxCop analyse.
2) remove the need to modify the MSBuild scripts when changing the rules set.
When I have the rules defined in the native FxCop project file I can edit the file in the FxCop nice editor and the MSBuild script is not touched when the rules set is changed.
When you pass the two parameters to the FxCopCmd.exe it will do exactly what I want: aply the rules from the FxCop project file (/project) to the DLLs (/files).