I haven't gotten those abilities yet.
I do have an ability that is actually pretty effective, though. If I'm up against a melee fighter, I'll shoot at him until he gets up close, then whip out my sword and do "Sever Artery" and then... uh... crap... whatever the other ability is that adds to the damage done by that first one. But anyway, it take's your enemy's life out over time, and it causes your attacks to do more damage. It's pretty handy.
I usually try to stay as far away from my enemies as possible, but, since I'm not much into magic, I thought it might be useful to have warrior as a second profession, just incase I had no choice but to stay and fight in close-combat. It's actually pretty effective sometimes... except when I'm fighting alone against ten other enemies...