Dual wield whip

Thought I would duel wield a practice whip for practice purposes, however: A practice whip is a whip, made of leather, and weighs 2 pounds 15 ounces. A darkling sword named 'elf-cleaver' is a sword, made of iron, and weighs 12 pounds 1 ounces. You wield a darkling sword named 'Elf-Cleaver'. wear whip You stop using a darkling sword named 'Elf-Cleaver'. You wield a practice whip. You feel you will learn better with such a fine practice weapon. Your skill with a practice whip is adequate. wear sword You dual wield a darkling sword named 'Elf-Cleaver'. You are skilled with a darkling sword named 'Elf-Cleaver'. ie, i'm weilding a 2lb whip, over a 12lb sword. I have tried with a few different swords, with different weights but the same result! nb: I am a lvl 21 warrior, havent choosen spec yet, incase it might matter.