I'd only use it for specific situations:
1) if you really need the shock immunity (lightning vortex, maybe lightning lizard too) and
2) for quickly regenerating HP after a fight.
It doesn't have autocursing, so using it situationally is much easier than for example the crown of science for reading.
I'd advise against using it for regular fighting, although it may be ok if you really know what monsters to avoid in particular as a doomed char (most definitely ghuls, mimics, etc.). But frankly, since you're playing a short-lived race, any ghost bat from inside a wall could be quite dangerous. So no, better find a girdle of carrying for your duelist.