Yea basically it just makes that DV inapplicable.  If you had a Dodge DV of 0, then you simply can't dodge.  Likewise if you have a Parry MDV of 0 you don't have a counter argument (and probably are left babbling), and if you have a Dodge MDV then you find yourself simply incapable of ignoring what the person's saying.   ;D<br/><br/>And as far as 2nd Excellencies go, it's generally a better choice for Social Combat, as well as most generic abilities (like athletics or stealth) since your difficulties for those rolls aren't quite as high as they can be for physical combat.