yep, the difference between full fending and full slaying accessories for me is something like 3400 to 4400 healing on clemency. it scales off Strength.

Though nowadays, most paladins should be 35 strength spec and either wearing pentamelded Str/Vit accs or having a fairly hefty amount of strength accessories whether MTing or OTing, so it's not really a matter of wearing strength gear -because- of Clemency, just that it's yet another reason to forgo pure Vit builds.