Guilty as charged - I use serger threads for putting together my quilt top 'Too loud', and when I have finished it I might know how it wears, but it stitches up fine, and I definitly don't worry about running out of the the same colour thread. I have also used them for garment alterations when they were the best match in my collection, and had no problems with them at all to date. I say 'try it and see how you & your machine gets on with it'.