Last week I found some great grip fighting and attacking videos when you and your opponent are in a left bs right scenario.
Hope these help you out.
The first 2 are by American Shintaro Higashi, he has some great tips on how to keep your opponent out, while creating space to attack:
Next video is by 2012 Olympian Danny Williams:
In the video below you can see the importance of controlling the inside AND the importance of sleeve dominance in a left vs right scenario: