About the GChs, seems like you can only combo from it on counter hit if you do it against your opponent when they're in the corner. Watch video 12 from the filebank matches, and look at point 1:07 of the video. The opponent was only able to tech afterwards because the 6hs was done too late/close to the ground.
I think this move's awesome, as it covers more situational gameplay aspects for Baiken. So once she has an opponent locked down, that opponent won't find it too easy to safely get out.