Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks The point of the Inquisitor preset class?

So, I saw the new Inquisitor preset class in EE, and I wanted to try it out pretty much as is, switching Aerotheurge for Geomancer.

However, soon I had a thought. What's the point of the dual wands on a mage with 3 schools? I mean, the dual wands do good damage, certainly, but they cost two whole skills, dual wield and wand. That is a huge investment. When would I get the opportunity to actually make use of the wands, later on, when I have 3 skill bars full of spells?

I've only played the original a while ago for a bit, so maybe I am wrong. In you experience, does a Glass Cannon 3 school mage actually ever have spare action points to use for staffs/wands? Or maybe the wands are actually so powerful as to make them better than spells for single targets?

It just seems much more useful to go with wand and shield, or simply staff... advice?