Been messing about and came out with this build for my Nightblade. Tank one spec, DD the other. Yes, sorry folks I am using Light Armour + wooden sticks. I'm not proud of it but it really is the only viable way to get things done.
Firstly here is the link to the build:
http://tinyurl.com/l8xx4po
Here is the screenshot of stats (Note: I am using VR5 Sweetroll food + Unstoppable is active to be clear.)
http://i.imgur.com/JwgFt0c.jpg
Let's start with the Tank build, the only skill I'd consider swapping would be Rapid Regen for Force Siphon but someone told me it's bugged (can anyone confirm?) Aside from running out of stamina and the need to constantly have Unstoppable up, this build has potential; on paper at least.
Destro DD build is pretty standard stuff, much more flexibility here though. Sap Essence is more for group support but can easily be changed for Wall of Elements or Weakness to Elements if no-one is using that. Ultimate could be changed for Soul Tether.
It's worth noting that I would use 7 light for the DD build but for armor purposes then the tank build needs to be 5/2 Light / Heavy.
Mundus Stone: The Lady to softcap armour. Could swap to atronach for DD.
What do you think?