Personally i really want to test Pebble or LG Watch, but having a Windows phone doesnt let me to do so... Thus i am thinking of going back to Android.
If you dev unlock your phone, you can side load the Pebble Notifications app, I have been using it with a Pebble 301bl (got for $62 from Best buy) for almost 2 months now. It does all notifications including Cortana.
If the new Pebble Time will work, that is a question I would like to know. After owning the Pebble, I love it, I want voice and color and the Time has that (how well it works with WP we don't know till someone tests it). If someone could confirm 100%, I would pre-order a Pebble time steel right now..
The LG watch is Android wear and no they will not work on WP (