I took a class about 2 months ago for the Thimblelady technique. I didn't quite get it during the class and haven't practiced since, but most of the other ladies in the class were very impressed with the technique and the thimbles and they were very successful. Some of them were long-time handquilters of the normal method.
The instructor said one of the most important tips is to hoop your sandwich as loose as possible.
If this method is done correctly, she said there is no bending or breaking of needles.