Shyvana Attack Speed vs Full AD

Hi, I know people tend to build Devourer, Blade of the Ruined King on Shyvana jungle. But I've been experimenting and getting full AD items like Warrior and Black Cleaver, I havent had enough experience to say yet but I think the Full AD build may be better. The reason being is that all her moves scale of bonus AD and full AD items just offer more than what Attack Speed items do like Black Cleaver offers damage, hp and cdr, frozen mallet high hp and some damage, trinity force gives bit of everything and Titanic or Ravenous Hydra for more aoe damage.

I feel that with the cdr you will get to use your Q more often than you would with attack speed items and again I feel they offer more than what attack speed items currently give. I still plan to play more games as Shyvana to know for certain, but I dont main Shyvana so I dont have as much experience as some other people so I just wanted to hear their thoughts.