Yes Abbyquilts,
Walking foot and a darning foot are available. One of the darning feet I came across is very small and stubby, like most of the foot was broken off and you have shank and ankle left. It was intended by the sales brochures to be used for darning and mending along with FMQ. Another looks just like the metal and plastic spring action you see for modern machines. I have also found a 1/4" piecing foot for my singer 127. It is in the mail. Don't know how it is going to work yet.
The walking foot adds a little extra noise to the rattle and clank symphony of treadling, kind of fun But does feed the sandwich layers better when squeezing a row of stitches up at the edge of a squishy sandwich.
Aardie.