Couldn't see the vid from your link but found a version on youtube
That is brilliant, so simple but brilliant, I hate trying to balance a shirt/t-shirt on the ironing board to do that, takes me ages. I shall be doing it like that in future.
I'm so sad I was so excited when I could do it and was showing hubby and he wasn't the least bit interested the git

Showed my friend at work today, at least she looked impressed
Our cases are big so I can afford to lay all the clothes out like that so they don't crease, I used to roll them up when we had smaller cases.