Well, the stance just adds to your chance to dodge.  Without the stance I'm at around 22%, I think.

I duo all the time with my shaman... We are up to level 41 now.. I am drunken and the shaman is bear.  Its a great combo.. What helps with multiple mobs is dragon has AOE skills, so i use that to pull all the aggro on multiple mobs.  We can take out 5 dot mobs of equal level or 1 or 2 level higher.  We can take out groups of 2  4 dot, or 3 3 dots also.

At level 20, We had our first encounter with a 5 Dot (it was level 21) and was able to take it out.  Once you get into the twenties, and low thirties things get a lot easier... But then they get harder mid to late thirties and into the fourties... But like i said, we can still take out 5 dots with ease.