To have a real discussion on the forum it is not enough to write "yes it is really effective" -- as we don't have any common definition what ‘efficiency' in aikido is LOL And!! even in the same dojo, what is efficient for a beginner may not be efficient for more advanced student.
Instead, please read my post carefully, I wrote few arguments from biomechanical point of view. Could you please address these arguments?
I am afraid I won't for I am not the auhor of the articles. I just want to let people know they exist. This was posted in the website section for that very reason and whilst we may talk about it, I don't feel qualified to answer your interesting questions.