Very interesting! I'm surprised that I don't care for it, though. The squared corners on the back don't appeal to me; I prefer mitering for the diagonal finish.
And the thought of closing that thing all the way around with a hidden stitch just makes my heart pound!
Yet, I do an applique/hidden stitch to handsew bindings down.....go figure.
Isn't it wonderful there are so many ways to do the same thing?!
Jan in VA