Oh, forgot to mention that when you do the sword exercise it should be able to be done slowly and in one smooth motion. Speed is not of importance. Of course, it can be done quickly, but sometimes people cheat by using speed to substitute for lack elsewhere, so it is good to start slowly. I'd be rather curious to find out if Akasawa Sensei is able to do these exercises. By the way, does he ever speak of Sagawa Sensei? What was his impression? Maybe you could answer these questions through a private message to me.
I'll pm you later for sure, but yes the premise for most exercises of these types is that they have to be done slowly since the skill involved doesn't have anything to do with speed/explosive movement.