Some labs are now capable of performing male-specific DNA testing:

http://www.dallasnews.com/sharedcontent/dws/news/texassouthwest/stories/DN-dnatest_11tex.ART.State.Edition1.4ba54ba.html

Anyone employ this type of testing yet?

We have, via North Texas State Health Science Center's excellent work. Their DNA lab guru (along with Dr. Arthur Eisenberg) John Planz is quoted in the article and is working on test kits.

Here's the Statesman version:

http://www.statesman.com/news/texas/male-dna-test-yields-clues-in-texas-criminal-172442.html