The drill described is this video is more suited for fighting than self defense. The tori catches the uke's mawashi geri, counters with a reverse punch and executes a takedown. From, there, the tori must pass the open guard and enter with a knee ride. After some strikes the tori finishes with an Americana. Please watch to the end of the video where I include some dojo footage of semi-live training. The two girls featured in the video did a fantastic job although they both opted for a submission that they were more familiar with.