There was an influence on the other Kagyu traditions. One of the Shamar Rinpoches wrote a commentary on it. These days it seems little known outside the Drikung Kagyu. I believe that Chetsang Rinpoche revived the study of it, prior to that it was not much studied in recent times.
The Gong Chik is a collection of sayings by the founder of the Drikung Kagyu, Jigten Sumgon. Some of the sayings go against commonly held Buddhist teachings, such as pramana (buddhist epistemology) teaches the ultimate truth. (Quoted from memory, not an exact quote.)
Having obtained the supreme freedoms
and conjunctions of the precious human existence,
endowed with faith, energy, and intelligence,
Having attended on a worthy spiritual friend
and received the pith of the holy instructions,
May we practice these properly, just as we have received them,
without obstacle or interruption.
In all our lives, may we practice and enjoy the holy dharma.