Viking has a walking foot with interchangeable plates. Don't know if Bernina's is the same. The thing I like about the SID foot, is it is very easy to keep in the ditch. the thing i HATE is that it has a single small needle hole. Great for even SIDing, but if you are trying to follow a seam and do a turn, or even stop your SID when you get to the border, it is really really hard to see when to stop. If I have a quilt where the SID can run off the end, I use it. If I have to stop or pivit, I use the regular one. Just something to be aware of.