Can Player use Third Hand perk to cast touch spells?

[thom]

So I explained to the cleric PC that (as Fred pointed out) he can't cast healing spells unless he forgoes any attacks on his turn. But he still wants a shield's benefit, and to be able to cast healing spells on adjacent party members. So I'm gonna take a leaf from D&D and make the following Magical Perk:

Combat Casting
You can cast beneficial touch spells while wielding a shield. You must use the hand wielding a shield to do so, and you cannot have anything else in that hand besides a shield.

How does that look?

thom