Hi Again Jonathan,
Yes. We do shomenuchi, yokomenuchi and a couple of others the way your avatar shows (and I tried to describe).
Sorry that the web space is dead. I was enjoying the pictures.
The logic we would use in our dojo runs like this:
o If I crank on the wrist, it isn't ikkyo anymore. I've transitioned to nikyo.
o If I don't crank on the wrist, why did I waste my time transitioning the grip and offering the momentary hole for uke to try to escape.
In general, we try to eliminate wasted movement from our technique...boil them down to their pure essence.
Sure, it's symantics, but to us they are important symantics.