Given how much has been modded/hackable in the past does it seem likely the Garmin Fenix GPS watch with BLE will be made to communicate and allow notifications from Android phone? The Fenix currently pairs and is compatible with the iPhone. Garmin's position is (paraphrasing) there are too many versions/models of Android. On the later model Android phones is an app all that is needed? It was known going in that there was no support for Android. The watch's features are outstanding as a stand alone watch. It would be "over the top" if someday it would allow for Android notifications.
I am using a Nexus 4 and the Tactix.