When you hear a climber say "I hired two Sherpas to help me port supplies up the North Col" it's almost akin to saying "I hired two chinamen to help me lug these boxes around." How well do you think that would go off in civilized society? It only almost-kinda-sortof makes sense in the highest regions of the Himalayas as Sherpas apparently have genetic adaptations that make them superhuman climbers at that altitude so you might want to clarify "The climbers I hired were Sherpa, specifically."
I'm not really sure at all why you chose "Health Sherpa" as a name (what's the connection?). Just FYI, you're productizing the name of a people.