I just started reading this, and I find it very good so far. The characters are great, and the action is good. It's from the mangaka of Planetes, so some of you might be interested. I wonder if any of you has given this a try.
Series is being done by manga-screeners, hopefully some of you will check it out.
http://www.mangaupdates.com/series.html?id=1568
http://www.mangascreener.com/project.php?id=90
Easiest way is probably downloading them from #lurk