Its been great. I was in Mac'Aree and got ganked by 7 Horde who have apparently been killing two other alliance as well. I got back to my body and rezzed and when they jumped on me again a massive raid of Alliance stormed in and slaughtered them all and invited me to their raid of vengeance.
It was beautiful, something I haven't experienced since Vanilla. I love seeing all out war spark from skirmishes or even One-Sided gank squads, it really gives that MMO feeling to the game thats been missing for so long. I'm not one to rage when I get killed or camped so I don't mind the downsides of Warmode.