I transitioned to a pump (not the OmniPod) a couple of years ago.
This was done with a group of 4 others. Some brought along a partner, others went alone.
There was a lot to take on board but there is also a lot of information available on the internet and any good diabetes team should be available on the end of the phone or email to assist if you have any problems.
So, I would say, based on a my related experience, only you know whether having your partner with you would be useful as it depends on how you learn and what your partner is like.