I was duoing with a friend last night, me a swashie and he a warden, both level 13. I will tell you what: Wardens can layeth the smacketh down. In fact, there were many fights where the mob would be dead before I even got a chance to react. My friend would root the mob from far away, I would charge towards it while stealthed ready to unleash my amazing DPS, he would trigger his HO and I would be left standing there, still stealthed with nothing but my daggers and a corpse to keep me company as my friend's laughter echoed in the background.
I always loved tanking my main in a group with a Warden/Fury because of their wards. Last night was the first time I actually got to duo with one and I now understand the true scope of their abilities.