Mele weapon for Xbow tier4

[Xen]

But won't the Wormbane without shield count as a twohanded weapon?

Yup same as Aurora blade it feel like 2h sword without shield?

Yup both of these weapons are bastard swords. Both can be used as one or two handers.

They are better at being a two handers but get a decrease in stats when using it with one hand (around 30% less iirc).