I don't stutter either, but when my insiders are more active I tend to stutter more. Have wondered about that too. Sometimes I think of it as the betweener or sliding - having less control between switching or sometimes wonder if one of mine is a stutterer. I see my childhood as having been a person with selective mutism - only talking when feeling very safe to do so. Learning to talk I might have stuttered but I don't remember.

I mean the I of us doesn't stutter.