It is my understanding that there is currently no common protocol that the fr920xt and the Concept2 and SkiErg can use to communicate. Even if a common protocol was exposed, there is no way for a ConnectIQ app to push data into a .fit file, and without this you can't save your activity data and upload it to Garmin Connect (and other services). Once both of these issues are resolved, I'm betting that you'll see a few applications for this stuff.
