Hey Jim, good to hear that everything is going forward so nicely :)
I've been asking about GL capture already, so I wanted to add that SimpleScreenRecorder received a major update for its GL capture module a few days ago:
https://github.com/MaartenBaert/ssr/commits/master
Even though it still has issues especially with Steam games, maybe this might be interesting for you and your fellow developers?
EDIT: Okay, so the GLInject part doesn't have any issues at all, I just forgot to set LD_PRELOAD to the 32 bit library, now it works just like the game capture on Windows (except that you have to use ssr-glinject for every OpenGL program you want to receord). The only wonky thing is the whole streaming part itself - which is where OBS shines :D