Hello,
I have good news, my friend is working for Bernina Switzerland, she received a mail from Bernina " Info Gate", this type of information is given to all Bernina's agents and dealers, she showed me this mail, it is saying : the Long arm foot N°96 should not be used at all for domestic sewing machines as it can make severe damages to the machine BUT They are working in making a special ruler foot for domestic machines, they are not saying when this foot will be available but. as soon as my friend has this information, I shall give it to you.