Id be keen on this.
I really liked that Runkeeper use to work with the original Pebble. I kept the app at the version before Runkeeper removed support.
Now I’ve the new Pebble is disappointing but not surprising to see this functionality doesn’t work regardless of Runkeeper version.
The earlier versions of Runkeeper do launch the activity tracker on the new Pebble but nothing else, they timer doesn’t start (though it does in Runkeeper on the phone) and the watch buttons do nothing.