I enjoy that script, found here.
http://www.rpgmakervx.net/index.php?s=95474a4a15903a8baa79a68435a9cc2f&showtopic=1044
http://anonymouscreations.we.bs/scripts/kgc/KGC_EquipExtension-09-06-2008.txt
How it adds extra equip slots like arms and legs and uses EP points. I would go with this one... but I kind of want to use OriginalWij's Dual Wield or Shield but I talked to him and it seems that by me using KGC_EquipExtension it's not possible because both re-write the same thing.
OriginalWij's Dual Wield or Shield
http://www.rpgmakervx.net/index.php?showtopic=19027
So is there an alternative or can it somehow be worked out?
Edit: I also use a lot of Yanfly scripts including his edit of KGC_ExtendedEquipScene so I don't know if an alternative would work or not.