Man I totally misread your post. I thought you meant Blood and Thunder instead of Battle Trance.
Anyway I've switched to Arms just to try it out for my offspec, and since Frost DKs were taking all my one handers. I rarely get a chance to DPS but wanted to try it. It is a lot different on the dummy, I pull like 18k where in fury I'd strain for 15k. However I haven't gotten chances to try it on bosses. Maybe if I had more chances to DPS I'd have a better idea.