This is just a thought I had now:
I wonder, if we have two of the same weapon or two of the same weapon line (an example would be the Needlegun and Pepperbox) equipped at the same time, that perhaps we can dual-wield them, perhaps even with special charge attack combos?
The catch would be that while doing so, you can't shield. Furthermore, damage would be decreased in some manner (either overall or you get less attacks in a combo).
Discuss.
Sounds really gimmicky.
I don't approve.