Is there a way with Perks to distinguish which hand the Player is using?

I know on GetEquippedItemType says :

so, it SEEMS like the framework for determining the Hands is there, but I don't have the CK with me so can't check right now, and I don't recall ever seeing a function like that...

Basically, what I'm thinking is assigning the Player a Left/Right handedness, and having benefits/penalties dependant which hand they're using, as part of a larger mod.

Thanks in advance for any suggestions (although I expect this is probably impossible right now :/ )