Yea, the acufeed flex thing kind of bothered me. I mean acufeed doesn't work unless you engage it on the 6600 or the 7700 so how will this be any different. It kind of looks like a regular walking foot. Since I have the 11000SE and a 7700 I have no need to get this just to combine 2 machines. Now I can embroider on one while sewing on the other.