Over the weekend I spent more time with StyleCop, bringing a representative sample of code in line with its recommendations.
Fridays intuition has proven correct - there are a handful of rules that I'll disable, but most of the rules are useful, leading towards more maintainable code.
One frustration I found was the lack of a commandline version - the standard download includes Visual Studio and MSBuild integrations, but no commandline version.
So, I've written one.
As soon as I've finished testing it, will post here as a download with source.