No idea, though my hunch is no, since none of the other crit bonuses work with wolf form.
Since this thread got bumped, I might as well mention this for posterity's sake: U36 nerfed / bugfixed the various Tempest special attacks (i.e., Growing Storm, Dance of Death, Many/Thousand Cuts) so they only work with dual-wielded weapons.
Really dual-wielding, not "oh I'm in animal form but I'm holding two weapons so that makes it okay, right" fighting.
This nerfs builds like
Togg which used tier-5 Tempest abilities in wolf form.
AFAIK, the TWF and SWF+TWF bugs have not yet been fixed, so there is still some value to splashing rgr 2 to abuse those bugs. For now.