Is it possible to get user input on the phone and do something with it and then display some result onto the pebble watch using only Pebble.js and the CloudPebble?
For this case I think I would need PebbleKit JS or PebbleKit Android/iOS in order to communicate between the phone and watch.. right?
Pebble.js is built using PebbleKit JS, so anything you can do with PebbleKit JS can be done in Pebble.js, including settings pages.