Whole mechanic is garbage IMHO. It just happens to actually work out for feral because of free GCDs.
I had to go feral on Protecors HC non elite and the spec just left a bad taste so now I have a moonkin set in case I have to dps any 1 tank fights.
Revealing Strike does pretty much the same thing in one ability where as DoC is tied to 3 other spells that do no damage.
I just don't get the appeal, it feels like one of those old mechanics that wasn't actually thought out by the developers but players found and abused.