Best Practices Using uptodate?

How do you all use in your build scripts? I am using it to see if a build should be performed. I am getting the correct value in the property specified by uptodate but I am having some trouble determining the correct way to structure my build file to avoid using antcall's. I have it working right

RE: AW: AW: Copy a single file to directories

I think there is a way to do what he is looking for with the built in copy operation and the mappers. I haven't figured it out exactly but he should be able to do something like: