If d20pfsrd.com's text is accurate, yes (as far as I can see, its prerequisite spell, spectral hand, would also work with divine touch spells). The hook can't perform somatic components for divine spells.
Basically, any light weapon, and you are always proficient.
You've mentioned this a couple of times. What makes a character proficient with the new form of a transformative weapon, or of a transformative wizard hook specifically?