Hi David. Yes Godo Shioda was an Aikido great. However there is not much resemblance to the art practiced by Koichi Tohei.
I'm not saying you see it as the same but thought I'd mention it as others seem to understand what he was doing and would be mistaken if they think that is Ki Aikido as done by Tohei.
scratching my head (ya, head lice). is Shioda's Ki different from Tohei's Ki? seemed like that is what you implied. maybe i read that wrong, perhap? or are you saying that the outward forms are different?