Yeah, the magic rejiggering of names everywhere with no clear documentation of what mapped to what† killed my interest in Ember the first time I tried to actually use it for even a fairly simple app.
† Plus the enforced snakeCase/CamelCase everywhere, but that's more to do with me far preferring names_with_underscores in general.
This is one of the reasons that Ember.js + Rails seems like the preferred setup. Ember.js + Python gets you into converting underscored names to camelcase names.
† Plus the enforced snakeCase/CamelCase everywhere, but that's more to do with me far preferring names_with_underscores in general.