克隆智能指针vs抽象工厂

我需要获得一些抽象类型的新实例，我想到的两件事是抽象工厂和克隆智能指针。哪一个看起来更好?工厂方法似乎更通用，但过于冗长，特别是当抽象对象嵌套时。克隆指针更紧凑，但看起来有点难看，因为我们需要创建一个"虚拟"对象作为模板来创建其他对象。

class IObject {
public:
    virtual ~IObject() {}
};
class Foo: public IObject {
public:
    struct Config {};
    explicit Foo(const Config& config): config_(config) {}
private:
    Config config_;
};

抽象工厂:

class IObjectFactory {
public:
    virtual ~IObjectFactory() {}
    virtual std::unique_ptr<IObject> Create() const = 0;
};
class FooFactory: public IObjectFactory {
public:
    explicit FooFactory(const Foo::Config& config): config_(config) {}
    std::unique_ptr<IObject> Create() const {
        return std::unique_ptr<IObject>(new Foo(config_));
    }
private:
    Foo::Config config_;
};
void DoSomething(const std::shared_ptr<IObjectFactory>& factory) {
    std::vector<std::shared_ptr<IObject>> objects;
    for (int i = 0; i < 10; ++i) {
        objects.push_back(factory->Create());
    }
    // Do something with the created objects
}
int main() {
    auto factory = std::make_shared<FooFactory>(Foo::Config());
    DoSomething(factory);
}

克隆指针(实现之一):

template <typename T> class clone_ptr; // deep cloning smart pointer
void DoSomething(const clone_ptr<IObject>& object) {
    std::vector<clone_ptr<IObject>> objects;
    for (int i = 0; i < 10; ++i) {
        objects.push_back(object);
    }
    // Do something with the created objects
}
int main() {
    clone_ptr<IObject> object(new Foo(Foo::Config()));
    DoSomething(object);
}