The catch is this - if you want to fight a weapon sieze warrior you need to wear two norem weapons.
If either of your weapons is not norem, he will steal it, no matter first hand or offhand. If you wear two norem weapons, he will disarm the first and the second will go to your main hand. If you want to re-arm, you need to remove the offhand norem weapon that is now in your main hand, which means firing a trigger that is usually very long. This whole fiesta leaves huge openings for you to get caught weaponless, or even worse, wearing two demon talismans.
The fact that they can't disarm offhand weapons that are norem means absolutely nothing. If they weren't able to steal offhand weapons (that are not norem) though, that would be huge and would also balance the situation, but it would make no sense logically, hence why my original suggestion doesn't include it.
@Morlhach: Those numbers seem perfectly fine. The problem is, they do not correspond to what actual data shows. There are a few logs around and everyone can count after all.
