I justed look on pg 78, as I was trying to picture the savate kick you were talking about. I see what you mean about being off balance and all. I personally have never EVER practiced this kick at all. It seems it might be a good technique to test the opponent or used as a feint to pave the way for punching (in sparring), but as a stand alone attack or an actual self defense technique... no way for me.
Have you seen the battle between Chuck Norris and Bruce Lee in the coliseum? I believe at one point he used this kick twice on Chuck and then out of the blue he feints' it once more, then immediately trancends into a swift hook kick to the head! I know it "tele-"lie"-vision" and all, but it gives me a good visual of the movement.
I like the idea btw. And since its been awhile, the book has collected a bit of dust. I will give it an overview and give my mind a workout for a change! lol Maybe something will stand out.