AngularJS - service to call http async and return data to controller - is there a better way than exposing the promise itself back to the controller?

asyncFactory.js

.factory('someService', ['$http', function ($http) {
    return {
        async: function () {
            return $http.get('someUrl').then(function (response) {
                return response.data;
            });
        }
    };
}]).controller('someController', ['$scope', 'someService', function ($scope, someService) {
    someService.async().then(function (d) {
        $scope.someData = d;
    });
}])