http://elderscrolls.wikia.com/wiki/The_Elder_Scrolls_V:_Dawnguard#Werewolf
Might help? Looks like they don't have all the information for sure yet, but Totem of Ice Brothers could be something like that, and you also have the 100hp/stam increase.
Totem of Ice Brothers is 99% likely to be an improvement to the summon wolves ability.
There are no armor rating perks so unless they make Werewolf armor rating scale off some other skill or have a base value higher than 0 you will still be dropping fast to physical damage without spells.