Board Thread:Theories and Speculation/@comment-27821571-20160915183730/@comment-3279282-20160915223702

Then again, negative emotions sensing isn't a chakra nature. Yagura had complete control over Isobu, Yugito mastered Matatabi's powers as well and Han had a Steam Armour which would be pointless if it wouldn't be able to produce steam on its own.

The whole Biju training on the Island Turtle would've been meaningless if a jinchuriki could use the Biju's power without being a) in full control or b) friends with the Biju.