I bought this for my vintage Bernina:
http://www.ebay.com/itm/JAPAN-SUISEI...item5af2bbd732
As long as there is two hole right to the needle, it will fit.
It`s not cheap, but it`s very high quality and well made: you can keep it attached and move it away when you don't need it. I have attached "utility" quilt binding with it, biais tape on garnement, etc. Love, love this tool.
I have tried the "binding foot" that was coming with my Bernina 730; I was curious to see if it would work. Nope. Wasn't able to do anything with it :-)