I have one like this for my treadle!
http://www.ismacs.net/sewing_machine...erbraider.html

This video is what got me thinking!!! The only issue is that I have neither a quilting foot nor an underbraider for my treadle. Now, you can cheaply purchase whole sets of attachments for many kinds of machines on EBay but none of them fit my treadle. I guess that must be why I own other machines!

I'll try quilting with one this weekend and post the pics. Curious that no one has tried this before!!