There are no enchants for off hand items, as nice as that would be, it would be very over powered to add another 50+dmg to an offhand item. That badge offhand is great though as it is.
Edit: Off hand weps for dual wielding-yes Off hand weps for held in hand-no
Well perhaps if they changed the enchants. But currently the +dmg enchants are equal for 2h or 1h - so it'd be like your hunter being able to put +35 agil on his main hand weapon.