So did you buy it? :)
I've had two 28/128 hand cranks and I still have a 128 treadle - these are smaller versions of the 27/127 and they use the same shuttles, bobbins and needles as the full-sized machine.
Some people are crazy about quilting on their vibrating shuttle machines - I read a post recently from a lady who prefers to do her FMQ with her 27 over her 15. This seems inconceivable to me because I'm so insane for my 15's, but I do intend to pull out the 128 and the 27 sometime soon and give them a good try because of her letter. :)