This is what i'm saying about.
I always thinking that damageType refers to game mechanic, like explosion or 10 damage from fire through armor.
And resistType make this damage refers to another type of resistance, like "electrical fire", "shrapnel explosion" or something like that.
So i wanted to set weapons, that looks like, ets say, electrical in ufopedia, but uses melee resist.
It will be pure visual, for user to understand that this item has "electric" properties, without reading extended tab.
But if it not possible, then i will just write about it in an ufopedia article.