Originally Posted by
Projali
While it may provide some insight to high end raiding, that has very small applicability to the general wow population. When someone says "non-viable," that implies that their damage is so low that you probably won't complete encounters using that spec. They could be sub-optimal, certainly, but I highly doubt bringing a feral will prevent you from killing normal modes and most heroics. If you're at the level of raiding where bringing a "less than top 5" dps is detrimental, then you probably aren't on a forum asking how others are finding the spec.
Method didn't use a disc priest on Heroic Lei Shen, doesn't mean they aren't viable.