Some of my Aikido guys questioned the value of iaido training. Specifically since it consists mostly of kata (forms) practice.
We didn’t even mention the fact that at a certain level most of the practice is suwariwaza (seated.)
I found this video on Youtube of an iaido old-timer, Haga Junichi.
The quality of posture and movement here is pretty evident.
At points in the video he reminds me of the kenjutsu expert from Kurosawa’s “7 Samurai”.