One thing that really surprised me about our switching was how very subtle much of it is. It fascinates me to watch it. Often there is just a momentary pause, and then for a fraction of a second it is like a shade falls down over the eyes. That's it. Very few people would notice it, but every time there was a switch, there it was.
For alters that are more removed from me the switching was more dramatic though. The head rolled back and the eyes rolled back as well... how embarrassing that that is what we look like sometimes! We have often said that we 'roll away' when amnestic alters take over... now we know what that actually looks like. It's pretty ugly really. : \