Ortner's work is rigorous, as in the best of academic work, but is delightfully readable. Apart from some necessary theorising and explanation of methodology, it is very accessible. This is the book to get into when you've had a diet of Boys (mostly) Own Adventures in the Himalayas, and are looking for something a bit chewier.
It is in fact a good companion volume for anyone with an interest in the sociology of mountaineering.
I also read at the same time Arlene Blum's 'Annapurna: a woman's place' which is an exemplar of both 70s feminism and counterculture. Ortner places the various waves of mountaineering (military style expeditions/macho competitiveness/ beginning of women's involvement / counterculture) in their historical and sociological context, whilst simultaneously placing the Sherpa at the centre of the story.
It also tells much about the interaction between mountaineering and Sherpa Buddhism - the changes to that religion and the various responses and attitudes of the Sherpa to the religion.
Never does Ortner present the Sherpas as a homogeneous mass. She gives both a good depiction of the big picture, but also incorporates enough post-modernist sensibility to recognise that the Sherpa are not an indistinguishable mass with identical reactions, motivations etc.She also examines seriously Sherpa as the agents of change (eg through strikes) and where Sherpa power vis a vis sahibs lies.
People who enjoy this would also enjoy Ed Douglas's 'Chomolungma Sings The Blues'. Douglas is a climbing journalist who, whilst not an academic like Ortner, also has a lot to say about mountaineering and a strong focus on Sherpa involement.