I do labels differently...I use the backing fabric if possible, print a message on the computer, copy it on tissue paper and embrodery it following the printing on the tissue paper...it will last as long as the quilt does and
the person feels like you made an extra effort...the thread shows up better on solid fabric....then turn the edges and attach as regular labels....my quilts so far have been for family, so I wanted the date and signature to be remembered..