Apple are allowing apps, in iOS6, to declare that they can provide routing info so I don't thin it'll be too long before these gaps close themselves.
http://appleinsider.com/articles/12/06/13/apple_hands_off_tr...
http://appleinsider.com/articles/12/06/13/apple_hands_off_tr...
iOS always seemed to be designed with monolithic apps that did everything and hence not require too much app switching to complete a certain task. (at least on the iPhone. On the iPad the four finger swipe makes this a moot point)
But what iOS needs is for google to provide a replacement maps app and to register itself as the default maps handler (in effect stop the built in and useless-at-this-point-to-me maps application from ever launching)
I guess I'll hold off judgement until I actually use it.
Makes me hope a 3rd party transit app will be able to provide routing information in a format the default maps app will be able to display.
I would love Maps to be able to mash together the data from 2 or more routing apps in order to give me a complete journey!