Good stuff, put me in mind of two things, one was an interesting session at summer school a few days ago where we entered early vs yokomen attack with hand blade to the eyes followed through and up the face for iriminage taking uke back in the direction they'd come from.
Second thing it reminded me of was Roy Suenaka's (with Christopher Watson) "Complete Aikido" where it's very clear that irimi was his go-to principle in street fighting situations.
Thanks for pulling up an old article with new eyes.
IMHO, entering is an attitude and an intention.
Since two bodies cannot occupy the same space at the same time (actually, at the point of impact they do), I'll race you to the center.
Thanks for reading and responding.
Any thoughts anyone?