I think you can run this query in a statement:
CharacterGetEquippedWeapon(CHARACTER Character, OUT INT ItemHandle)

But you'd have to find some convenient time to run the statement.

My D:OS Mods:
Dunamis - A 15 hour Adventure Mod for D:OS EE

A Necromancer's Crusade - 10 hour adventure mod for D:OS EE

4 Character Creation (EE)