Originally posted by Mike Haber
One way is like how I have seen Isoyama and Saito do it by using a tenkan or opening and turning off the line and then returning back the same way and cutting down the uke. The other is the way Seagal does it with a direct enter into the attack and cutting down the uke. There is no tenkan in his movement.
BTW, there is no tenkan in Saito Shihan's iriminnage kihon waza. On enters directly into shikaku.