I think people will continue to use Apple maps... I can see people using Google maps periodically for things like transit and street view though. For me, it's familiar, easier to use, integrated with Siri, and looks so much better.
It's no more pricier than its predecessor. And while it's of a cheaper quality than the iPhone 5, it's more expensive than the iPod Touch it replaces - Not to mention lighter, faster, better quality, and more capable.