The answer to your question partially depends on who you are (home user, enterprise, ISP). Theoretically everything is possible. For an enterprise the question is, whether that is a good strategy in the long term. If you have an outsourced network and environment, it would obviously be your outsourcer’s job to take care of IPv6 integration. It would be your job to make sure in your outsourcing deal, what kind of requirements you have, especially if you would sign an outsourcing deal for 5 or more years.
If you have internal IT staff though, I would not recommend full outsourcing of IPv6 integration. I would strongly suggest you get experienced IPv6 consultants in to help you with the planning and the new concepts (such as address, network and security concept). But you would probably want them to work with your internal IT staff. That’s learning on the job for them and builds knowledge and experience during the project. After all they will be the people that need to operate the IPv6 network in the future and that know the current internal policies and strategies best.
Hope this helps