actually, if you really want to be a nuissance, instead of dual wielding short swords, get a sun blade and a magical bastard sword. specialize in bastard sword and you've got a higher damaging weapon with the same threat range that still is usable without further penalty in your off hand (the sun blade is anyways). all at the expense of using an extra feat.
alternatively, you could wield a balanced (from the A&EG) longsword (or maybe even a bastard sword, though i'm not sure on this) in your off-hand and get the same benefit.
is balanced basically the enchantment on the sun blade that isn't mentioned but goes into its 50k gp price?