Yep, I use the little foot on my 6600 because it is clear has several useful marking and does not have that awful metal thin=g on the side. I don't like the even feed 1/4" foot as it requires a different throat plate and I don't want to bother with changing it all the time, and you are right it still has that metal thing!!!
If you use the little foot check the instruction for proper placement of the little washer for a Janome.