Thanks for the comments. On this move I generally try to finish it inverted rather than flip the guy over (you can lose him in the transition if he's got flexible shoulders), although if he wants to put in the work and flip over himself, I will switch to traditional arm bar. For that the inverted finish, the top leg is key.
As for more videos, I'm working on it. The guy that filmed it and uploaded this one for me just uploaded another one (guillotine --> anaconda choke). As I'm not technically that savvy, I need his help (I tried to upload a video myself before and couldn't do it). I will put it up on the forum in a day or two. I also need to learn how to use the youtube channel that J set up for me.
Karl