Did you know about the little red blob on your un-picker? It isn’t there to just look beautiful, it really does have a practical purpose as well.
If you want to unpick a seam super quick all you need to do is use the shorter spike on your un-picker, the one with the red blob, under the row of stitching and then “zip”along the row of sewing slicing through the stitches.
The red blob prevents the spike poking through the underneath of the fabric and slicing though the garment as well.
Give it a go, it really does make for quicker unpicking!