P.S. and yes, those techniques would apply when using a real katana. As someone said on this board before, this martial art was developed from the samurai battlefields, not on the street.
I'm still learning about the way of the samurai, but Aikido was clearly developed from that.
It might be more accurate to say that Daito ryu Aiki-jitsu was created from battlefield techniques. Although Aikido was derived from that art, Aikido itself was developed by Morihei Ueshiba in a dojo.
While Aikido uses the motions of ken-jitsu (riai according to Lowry), I believe Aiki-jitsu technique was actually devised for a person who either broke or lost their weapon on the battlefield.
Just a few points to ponder.