First of all, I have had no need to do a blind stitch, so cannot advise you specifically on this.
... whenever I contemplate a new foot, I go to my dealer and let them demo it and then I give it a test drive. Is that "one" really "needed" to do what I want it to do? Or are there other feet that will give me multi-options for usage? Or why do I need that specific one? My purchase may not happen that day, as I often go home and give it a try with feet I have.
These feet are expensive, so if you can avoid purchasing one/any why buy? Often times, I have found I have something that does the job, without the need for a new one. Just because they tell us that "one" foot is specific to a function, does not mean that a different foot will not do the job.
Keep in mind that Bernina often have "foot" sales ... a better time to purchase!
When I can opt for a D foot, that is my choice.
Last edited by QuiltE; 02-28-2020 at 03:01 PM.