Funny enough, I did a setup that really shows how flexible a knight really is.
On a Tenax run I decided to take the knight in. However, much to other knights surprise I skilled no weapon trees at all. Yep, zero weapon skills. Instead I skilled protect ally, onslaught, shield, heroic, stars, disabling 5 and martial reflexes. Of course I had lots of points for my own defensive buffs.
So there I was buffing like crazy and taking little damage from the attacks. Because I had Def support 5 and steadiness 5 I never got knocked. Of course I was whacking away with tiny hits but that was not the purpose of the build.(Had a fast magical sword doing ~160 per hit but really quickly, lots of crits) In the end I walked away with a bundle of money, a ton of XP and every loot Tenax has to offer except the armour drop

. I even dropped 3 scales. All of this without doing maybe 1500 worth of damage myself. It really was worth it persisting with this class.
Artec