Board Thread:Warhammer 40k Novels/@comment-31.209.203.6-20130121002941/@comment-6078851-20130611004335

if kharn uses his left hand too much then he effectively puts himself at a disadvantage - if fighting against your standard ambidextrous space marine then kharn could very well be handicapping himself by not using both hands.

it might also be that kharn is so deadly in melee that he thinks "BLOOD FOR THE BLOOD GOD, but only with one hand". he might think that if he can't kill someone with only one hand then maybe he deserves to die :P