If you got accidentally duplicated, do you think your copy would try and kill you?
In media, there are sometimes stories where a person is cloned/duplicated (usually with identical memories) and the clone is murderous towards the original. Usually it's something like "I knew there could be only one of us, and you would do the same". Sometimes, they're able to work things out and can share a single public identity, or duplication gives one copy a chance to do go off and live a new life that they always wanted.
How would you and your duplicate get along? Assume you are living like you do today, in a society where duplication is unheard of and has no legal precedent.
Nah, We would become buddies. We would pretend to be twins in public. We'd split the work, I'd go one week and he'd go the other. We'd play Soulcalibur and Tekken and since we'd both be equally bad it wouldn't be frustrating.
It would be hard to alternate work if its a professional role. You would have to do like update sessions and it would make more work for both of you relative to pay.