Ok, slow response I know, but better than none at all.
Unfortunately, we have dropped PostSharp.
All was looking good until I needed to run our prototype code through the performance profiler in TFS -- PostSharp and TFS profiling do not mix! This is probably because they are both doing the same sort of thing: inserting code post-compile. PostSharp complains of non-native code in there and the build fails.
In our current project, performance is one of the top priorities so we have to use the performance analysis tool, so PostSharp had to go. It's a shame.
Herbie