Got my S4 and Pebble today - Awesome

Yeah, I get the same thing - it also talks in the browser gallery when selecting a picture or group of pictures. I disabled Talkback and still get those voice notifications. Plus, the top and bottom lines in the gallery refuse to go away, even if you tap on the picture or wait a few seconds. You can always select your pictures through the camera app and it won't have those headers and footers. Also, you can use a different browser (personally, prefer Chrome) and you won't have the page loading voice. All of this goes away if I turn off Pebble in the Accessibility menu, but obviously I prefer not to do that, since it removes the Pebble's functionality as a smartwatch.

This is the ONLY thing HOLDING me back from getting the Pebble.

The Pebble REQUIRES the use of "Talkback" notification and for Samsung phone (S4, S4 Active), this:
1). DISABLE MultiView
2). Make the phone "SPEAK" in many interface. I.e. scrolling home page make the phone goes "PAGE ONE OF xxx".

It is a BUG from Samsung, happened since the GS3 I believe and knowing Samsung, it won't be fixed anytime soon...