Here is my version of a Knight Warden. Built originally as a dreadnaught for my army I quickly realized my folly. I increased his mass and now he stands a full size taller than my Bjorn Dread.
My personal opinion is that making the Knight comparable to a Warhound is wrong although I have seen some wonderful large builds.
I have found it very difficult to play my Knight in pick up games using him as a counts as model. So I combine my wolves with grey knights and use him as a dread knight. He has fun walking around the battle field then.
He still is a WIP. I will be changing the claw arm up soon.
http://s825.photobucket.com/user/jamesknouse/library/Space%20Wolf%20Knight%20Warden
http://i825.photobucket.com/albums/zz173/jamesknouse/Space%20Wolf%20Knight%20Warden/DSC_0047_zps2555ef77.jpg
http://i825.photobucket.com/albums/zz173/jamesknouse/Space%20Wolf%20Knight%20Warden/DSC_0043_zps2ea3ac6f.jpg
http://i825.photobucket.com/albums/zz173/jamesknouse/Space%20Wolf%20Knight%20Warden/DSC_0044_zpsae3eda90.jpg
Does anyone know if official rules are coming out for Knights in reg. 40k or Apoc?