I hope this doesn't make light weapons obsolete for warriors
So, I have news.
Tried the perk myself.
Sure enough, 2 handed weapons are now only 1 handed (leads to some hilarious bs like rocking a bow and a shield)
Sure enough, you can offhand non light weapons, BUT: the offhand doesn't attack. If you rock 2 Curved Blades, only the first one is used in the Attack.
If you use a light weapon in the off hand, it behaves as you'd expect; both are used to attack.
So, bit of a mixed bag, but I don't think light weapons will become obsolete with it, should it ever be added to our perk choices.
It certainly opens up variety for the Staff wielding Champs among us, as their off hand is now free.