Why not have it both? I built an open source framework that routes views in your iOS app based on their restful urls. If you have a native view, boom. If not, HTML.

If you release a new feature you just make an HTML template for it and it works in old builds. Then when you are ready for native, release the native view controller in a new build. Everyone wins! (Especially the users, which I why I wrote it)

http://RESTMagic.org http://github.com/RESTMagic/RESTMagic