It seems to be a pretty standard play now that the RG either picks up the blitz up the middle or jumps over to take the RDE. RG just drops back a step at the play start and picks up whoever is the main threat on the play, and it works out fine. Issue is you need a well built mobile RG to pull off the plays and a lot of the G out there just aren't up to it.
Few examples of the play in action (not the best examples i've seen but not got time to go through every game i've watched looking for better examples);
RG picks up the LB blitz
http://goallineblitz.com/game/replay.pl?game_id=89635&pbp_id=3228422
RG jumps across, clips the RDE and stops the outside LB blitz
http://goallineblitz.com/game/replay.pl?game_id=89635&pbp_id=3234101
RG picks up the RDE
http://goallineblitz.com/game/replay.pl?game_id=89614&pbp_id=3738877
RG jumps over to pick the ROLB blitz
http://goallineblitz.com/game/replay.pl?game_id=89614&pbp_id=3740818
Every case the G drops the step, then locks onto whoever is threatening the QB, occassionally he'll also pick up the LDE on the play if the ROT is buckling but if you watch any team you'll likely see some form of the play trying to be done.
Few examples of the play in action (not the best examples i've seen but not got time to go through every game i've watched looking for better examples);
RG picks up the LB blitz
http://goallineblitz.com/game/replay.pl?game_id=89635&pbp_id=3228422
RG jumps across, clips the RDE and stops the outside LB blitz
http://goallineblitz.com/game/replay.pl?game_id=89635&pbp_id=3234101
RG picks up the RDE
http://goallineblitz.com/game/replay.pl?game_id=89614&pbp_id=3738877
RG jumps over to pick the ROLB blitz
http://goallineblitz.com/game/replay.pl?game_id=89614&pbp_id=3740818
Every case the G drops the step, then locks onto whoever is threatening the QB, occassionally he'll also pick up the LDE on the play if the ROT is buckling but if you watch any team you'll likely see some form of the play trying to be done.