Board Thread:Naruto Discussions/@comment-25343176-20150417160338/@comment-3965545-20150419191544

You have NO PROOF they are permanent, yet Naruto did not even use the SPSM form in The Last which is more proof towards it being temporary. It's the same damn deal with Obito and Kakashi, he gave Kakashi his chakra and what do you know? it was temporary.