"I think my internalised SW is a Very Private Person and doesn't need or particularly want to share his inner self with the general public. Hmm... maybe I should think about that some more. :-)"

Ftr, my scenario in this case was a sort of a fic-concept interpretation, and not a canon Shen Wei analysis, since we're already in the AU where he writes historical novels. :D I think yours is a lot closer to canon! I can just fit a lot of mutually exclusive character interpretations in different fics and headcanons. :D (Oh, and if his books are fiction, then only he would know if he's sharing his inner self or not, the readers would have no idea. :D)