We have now seen Obito as the Jinchuriki of the Juubi, and he has the exact same eyes that he had before he absorbed the Juubi. This lends a lot of weight against all the theories that the SO6P obtained different eyes after becoming the Jinchuriki.
Of course it is too early to be a definitive myth buster, because the Juubi was not complete when it was absorbed or the new eyes may have to be activated and are not permanently activated to save chakra.
I just find it interesting that there was tons of speculation as to whether the SO6P had the Rinnegan before or after being the Juubi host, and yet there has been no discussion about the lack of change in Obito's eyes.
Of course it is too early to be a definitive myth buster, because the Juubi was not complete when it was absorbed or the new eyes may have to be activated and are not permanently activated to save chakra.
I just find it interesting that there was tons of speculation as to whether the SO6P had the Rinnegan before or after being the Juubi host, and yet there has been no discussion about the lack of change in Obito's eyes.