What exactly are you trying to accomplish?

Yea I'd like to add a new Weakness (talent) for custom Sovs called "No Armor".

The effect of the weakness that i'd like, is that the Sov can't wear any Armor (say beyond leather - similar to the faction weakness but it would apply to the Sov instead).  

So if the Sov finds that helmet that looks like a bucket that you can hardly see out of (can't remember what it's called), or a "Rusty Shield"... then he can't use (equip) it.

What i'd REALLY like is to make it so each bit of armor that a Sov wears somehow reduces their magic effectiveness (mana cost, spell mastery etc)... but that seems rather ambitious so id' settle for something to just stops my "magic focused" Sovs from wearing plate.

I just find it a bit weird how anyone wearing plate and full helms can get around casting whatever spells they like.

Cheers.

That will work pretty well when they're on foot, but i'm guessing probably not so well once they get a mount.  Pretty good idea as a start point though thanks for the suggestion, prompt as always.

Not sure hadn't got that far, and not sure how it would work out... would probably try and create some additional traits and/or items that would balance it out to help the guy with no armor survive.  So maybe create the "cloak of shadows" as an item that gives +20/+30 or something dodge, or some similar traits that give bonuses to dodge/defense/initiative.

Check if you can edit the over-weight minuses, I think I encountered them around. If you find it, you might be able to affect the stats you wanted, thus the more overburdened your champion, the worse caster he is.

Pretty sure staff and daggers have zero weight.  Some weapons have weight... warhammer is 15 for example.  That would be ok because it would allow the guy with this weakness to use light weapons.

Main problem I see with this is that once they get a horse or other mount they can get around the weight restriction, so it's not ideal.