Non polymorphic containers during runtime

I'm trying to store objects in one of several container types, the type of the container is known during run-time. The interface of the containers is the same, but the containers are not polymorphic.

What I am trying to do is avoid the extra jump a vtable forces during runtime - by having a variable that should be of the concrete container type.

Consider that I have the containers:

class Vector1<T>
{
     T get();
}
class Vector2<T>
{
     T get();
}

And I want to have a container that is either Vector1 or Vector2 depending on some run-time parameter.

So my class should be:

Class VectorWrapper
{
      Vector1<SomeType> v1; 
      Vector2<Sometype> v2;

      inline Sometype get()
      {
          **how do I choose between v1 and v2, without the extra jump?**
      }
}