[Helborn]

ITL pg 41 under Two Weapons: Any character can fight with two weapons at once – if one of the weapons is a dagger, main-gauche, or spike shield, or if some combination like net-and-trident or two cesti is being used.
Also pg 111 under Left Hand Weapons: The left-hand dagger, or main-gauche, acts as a shield to parry 1 hit per attack, from non-missile, one-handed weapons only, from your front hexes. If you take an attack option, you can also make a separate dagger attack against the same enemy. It is rolled at -4 DX.
Neither one requires either the Fencing Talent or the Two Weapons Talent.

But "any character" does not get any of the benefits under either of those talents - all they can do is either attack with both weapons (with the 2nd attack at -4DX) or use the main weapon to attack and the dagger/main-gauche to parry. Note that without a talent, you can't parry with both(?!).