My hung gar curriculum, as far as sets go, does not include Gung Gee, only Fu Hok and a shorter suplementary tiger form called Black Tiger. We spend the first 20 minutes of every class on fundamental stances (particularly horse) and footwork (we call this our "warm up"). The remainder of the class is generally drilling a short sequence from one of the sections of Fu Hok, working on applications of that sequence, and at the end of class, we do the entire Fu Hok set.
I have studied Gung Gee in an academic sense, having read the Gung Gee thread here that turned into a nice PDF, I have the Lam Sai Wing Gung Gee book which I have studied, and also I refer to a nice Gung Gee video quite frequently. My own personal opinion is that by not practicing this form I am missing a few nice techinque sequences, but that our "warm up" set trains stances and footwork in much the same way as Gung Gee.
What is your opinion on what *fundamental* of Hung Gar I may be missing by not having trained Gung Gee? What are the most important fundamentals learned in this form? Are there important lessons there that cannot be gotten from Fu Hok?
Thanks,
Brennan