YEA! I have one and I love it. I bought extra bobbins for my machine and used the empty prescription bottles from my husband's pills. I mark the prescription bottle with white, grey, off white, empty. I fill the filled bobbins and put them in the marked bottle. Then when I use up a bobbin, I put it in the "empty" bottle and continue to do that until I am out of filled bobbins (of the color I am using). Then I just take some relaxing time, fill up all the bobbins and I am good to go for at least three quilts. No problem, no wasting time, refilling the bobbin, there is always one there for me!
I think the bobbin winder is the next best thing to the Calcu-Quilt. I love that thing too. Edie