It arrived today and I gave it a test run and I am in love. Easy to attach (and quick) and does exactly what I want it to.
If you don’t have one and are keen to sew parallel lines the easy way I highly recommend one. I have a particular project in mind which I am working on for my Christmas markets that requires a lot of parallel lines and I do love gadgets that make life fun.
A walking foot is also great for sewing multiple layers or very thick fabrics (of course!).