Wouldn't it be better to move Deny the Witch ability to Psyniscience skill instead of Evade?
Imagine an acrobat. He would be invariably good at Evading, as it is one of its two signature skills (the other one being - unsurprisingly - Acrobatics). But does it makes him good at resisting Psychic powers?
Yes, his WP-based Evade would be lower than AG-based one, but still... is it actually right (logic-wise) to assume that one can learn how to evade physical and mental blows at the same time?