They only get Storm's Path and Bloodbath. Both of these convert your own damage to health they do not drain it from the target's HP pool.
It's not difficult to implement a 2 handed sword for DRK off GLA or 1 handed axes for a job off MRD (such as Viking). They already have one handed animations done for axes at least a little bit when you look at Gigas. They use 1 handed axes and resemble Vikings.