Is it additive or multiplicative? Does anyone know? I know that sky splitter's smite chance is multiplicative with any other source of stun (for instance, if I'm using a 20% sky splitter with throwing hammer which has a 50% stun chance, half of the time that sky splitter smite procs the enemy would've already been stunned by throwing hammer, meaning that sky splitter only adds a 10% chance to smite) but I was thinking that since it's the same skill maybe they might add.