Not finding DRK squishy at all.

[Ditto]

https://www.youtube.com/watch?v=W6UCSSkwUPg

I think DRK could solo tank this fight fine, though.

Possibly. But that's a Warrior, They have a lot easier time doing it than Drk.

Drk could do it I definately know if they find someone else to split the damage with, or are able to time when the cleaves are coming and turn it into the group instead of eating it alone.