The appeal of adopting Buddhism in the west is the ability to pick and choose what works and what is suited to the culture and temperment of the people. Others might see that sort of "cut and paste" approach as a dangerous watering down of traditions, but the same process has occured in every land where Buddhism has taken hold. The Tibetans surely didn't adopt Buddhism without grafting on their own historical and cultural needs. And so there is no reason to fear the same process in the west. I always think westerners dressed in Tibetan robes look silly. Buddhism's strength is its appeal to the logicial mind; one should not get attached to the traditions that are part of any particular branch. And so dress as you always do, and forget about learning texts in the original language, etc. Absorb the spirit and train the mind!