Currently:
Bow - PvE only
Daggers - PvE and PvP

Originally (before the universal changes to bow and daggers):
Bow - PvE and PvP
Daggers - PvE and PvP

The developers stated that the aim of the changes was to ensure there is no weapon that was mass used in comparison to another.

I don't think it worked.

I'd just revert it back to the original system if I was them.