Hi all,
We were doing basic katatetori/morotetori techniques and one of the observations I had with my partner was that for NAGE, there is risk that Nage's fingers get grabbed by UKE instead of the wrist from kamae. UKE will then have a chance to reverse and turn it into sankyo even before NAGE performs a technique.
If you think about it, the fingers are the nearest point of attack, not the wrist. Have been practicing all this time and havn't really thought about it.