nope! not ikkyo! that's taiji! a bunch of aikido heathens! they wore silk pajamas to a fight! didn't even have the decency to put on a skirt! come one, eveyone in aikido knows that you can't do effective ikkyo without a skirt.
here is another aikido heathen who even suggested to do ikkyo on the way down https://www.youtube.com/watch?v=7Ba6NShe6ak
(start around 19m or so). although he didn't tell you the secret of his approach, that in order for it to work, you have to sing "all about that bass" while performing the technique. don't take my words for it. try it out and put the video on youtube.
you know that ikkyo curve(s) also run along the hip bones?
Interesting video. I will watch this in full when I find the time.