I should ask him, I know last time he used his fingers. I think the way you mentioned would be more pleasant. There is something about having to follow his fingers, maybe I don't like him to be in control or something.
He is very experienced with EMDR (over 10 years) and is level 2 certified, plus works with a lot of kids, so hopefully he can do it the other way. But there is more than that , that freaks me out! LOL