Originally posted by Mharr:

What does happen if you combine weakness and resistance on the same entity anyway, do they just cancel out?

Currently as Nefra indicated, you can't get +/- on a character's armor due to the whole fenris set being required so its a bit moot.

Fire resistance potion's % is higher than the -% though of the wood armor so it just makes the fire resistance effectiveness more marginalized to my knowledge (ie you take damage just only fractionally less).