I do this on all the quilts I make for very small children. This way they can not chew off the binding! I leave a bit more than an inch. I take the time to press the first fold with steam. I finds this helps with it compressing the edge and with puckering. If you are using a thick batting, you may consider using your walking foot.

Yep, I do it just like the tutorial and it works just fine! Of course the quilt police won't like it but I don't care what they think.