I was all excited about the impending JB update for the OG Razr until I saw this thread and remembered the FoxFi incompatibility. I live and die by FoxFi to tether my Nexus 7 to my phone for free with unlimited data (40 GB last month...mwahaha). I guess I'll stay with ICS on my Razr and just enjoy JB on the Nexus. But hopefully someone comes up with a non-root solution. I know I haven't provided anything useful here.
I used the sqlite hack on ICS and it was awesome. I didn't protect my root when updating so I lost it but for those who did protect their root the hack still works so no having to worry about it not working or waiting on an update.