Just to add to the dogpile...

I used ToW exclusively from as soon as I could until I hit L70. I respec back to it on occasion if I'm going to be doing a lot of PvE. For Arenas, you need Nature's Swiftness.

I think it's probably doable to grind out honor in BGs with Totem of Wrath. However, you are going to be dropping Multi-Fire-Novas a lot in BGs, so it may not get used as much as you think it would. It's probably pretty nice for BGs where you're in a big zerg of folks and not likely to have a rogue jump you that much. (Think AV on defense/offense where it's you plus 20 friends).