I bought a generic walking foot from Joann's hoping it would fit my 193? Singer Model 66. It is not a slant shank machine though.
I had purchased one for my new Janome the same day and it cost $35.00. This was was $9. something after the 40% coupon. The clerk told me to save the receipt and package and if it didn't work, to return it.
It works perfectly on both machines. Even better than the Janome foot on my Janome machine!
I would say, give it a try. I don't see why it shouldn't work! you could always sell it or give it as a gift to someone.
Good luck!