I have read that the only weapon attributes come from your primary hand in wolf/bear form. Do weapons like the Polycurse Dagger and Dreamspitter special attributes work?
For instance
Polycurse
Effect: This weapon is enchanted with many diverse curses. On a critical hit an enemy may be hit with one of these effects at random: Blindness, Exhaustion, Bestow Curse, or Enervation.
Life Stealing
Effect: This weapon drains 1d3 levels from its target on a critical hit.
I only ask because I know these type of effects do not work on glancing blows.