Re: Kamae vs Shizentai (hips underneath)
Aikido is more upright than grappling arts because you don't want to expose your face to strikes and you want to be able to move quicker. The aikido stance is not very effective is you get into a grapple situation. I think there has to be that distance maintained between uke and nage to ensure that any 'grapple' prevents uke getting a strong hold. (Ueshiba always said to take the person from their sphere of power i.e. unbalance them by drawing them out). Obviously this is timing and miai. Miai is probably not as important in grappling arts because the distance is pretty much set by the grapple.