I have been studying IFS lately and it sounds fascinating. I have not yet taken the blunge in getting a therapist but I have been exploring. I have tried to run through IFS on my own. I notice they always warn not to be blended with a part, stay in Self. But if you are not in the part, how can the part answer the question you ask? I ask a question from Self. And I don't feel the part enough to come up with am answer.
Anyway, I am a big fan of parts therapies- Resource Therapy, Big Mind, etc.