I was a student of Geshe-la's for a few years while living in L.A.
He was a very conservative lama who never talked about the practice.
However, he was a monk from Ganden Shartse who was very close to Zong Rinpoche and other masters of our precious lineage. In my heart, I always felt that he had a deep relationship with our protector, but I have no way of knowing for sure.
I am not sure if any of his western students knew what his personal practices were.
He NEVER spoke out against the practice, that much I do know.