I went the Archer/Ranger path. I often play Archer-type classes in games of this sort, so I wanted to see what they were like here, especially since I was planning to be a Warrior once Open Beta started. I ended up really liking the ranged skills, and though I have some finesse with ranged attacks, it wasn't always enough to keep me safe (like 90% of my deaths were from either an enemy spawning right behind me out of visual range, or being aggroed by more than one enemy at a time). If I didn't kill or almost-kill an enemy by the time they got to me, my health would drop fairly quickly, so it was interesting to get a feel for those dynamics.
I'm still planning on going the Warrior route for OB, but having been an Archer before, I definitely know that they can be an awesome part of a two-person team. Support your local archers!