Conditionally include service in angular controller

Question

AngularJS. I have

app.service('list', function () { .. get $('#list') .. });
app.service('grid', function () { .. get $('#grid') .. });

app.controller('myController',['$a', 'list', 'grid', function ($a, list, grid) { 
    if ($scope.isList)... list 
    if ($scope.isGrid)... grid
}]);

When my $scope.isList I don't need the "grid" service (because is undefined)

I understand that this could be done in an other way, using separate controllers, etc etc...

But my main question is: Is it possible to conditionally include dependent services?

Say by eg:

app.controller('myController',['$a', function ($a) { 
    if ($scope.isList)... thisController.AddDependency('list', list);
    if ($scope.isGrid)... thisController.AddDependency('grid', grid);
}]);