I am currently writing an xUnit test that's very similar to the nUnit task.  I was originally going to just write it and put it on github but it makes more sense to contribute it to here if others would find it useful (or as a suggestion to add this to whomever added the nUnit task).  A lot of the code between the xunit and nunit tasks could be reused, as they basically turn into the same thing after you set up the input parameters.

I'm also going to end up writing something to import nCover results as well, although that might end up being an extension instead of pushing it into the mscoverage format.

Hello Dwin. Did you finished the xUnit Task? Thanks!