At Travis's request I've split out the coverage UI aspects in to their own application. Here's the breakdown:
SUnitToo - the model for doing SUnit tests
SUnitToo(ls) - a UI for the Refactoring Browser to run and show the results of unit tests and includes a hook to use SUnitToo(verage) against your running tests if the package is loaded
SUnitToo(verage) - the model for doing viral code coverage
SUnitToo(lsverage) - a UI for the Refactoring Browser to show the results of a coverage run and clear the results. This package shows the Coverage tab and inlines red coverage percentages against classes and method names