"What I find interesting is that a lot of T's who are "DID specialists" don't welcome littles in the therapy room. I don't get this...littles seem key to the therapy process IMO. My T is not a DID specialist."

I had the same experience. the former t i saw was not good with the littles... she'd actually talk more adult to them than to me!! with words i'd never use in front of kids and my lils felt terrible. we never told her either.
Current t - I didn't think she'd get it, but I think that i may be wrong. She did after all give them Benedict the armadillo stuffy and told them they needed a toy box =) that is encouraging.