Isn't that the wonderful thing about Inception? I'm half-inclined to think the whole film is a dream, or at least from the bit where they go into Yusuf's dream den and Cobb doesn't get to check his totem...

And if he is in limbo then there's the question of whether Eames is real or just a projection; a dream that you share with your lover is better than a dream with a shade, no?