The magnetic pole and the Earth's axis are two different things. If it's just the magnetic pole then it's no big deal except for navigators, some electronic devices and your toilet bowl may spin the other way. But if it's an axis shift then major life style changes will have to be made (Note to self: Buy more ammo).
Point of order...toilet bowl spin is a result of Coriolis effect, not magnetics, so no worries there.