Just upgraded to the Tizen NF1 build after finding out that Gear Manager was hiding Android apps I'd sideloaded (not sure if it's been doing that for a while or whether it had something to do with upgrading to the Note 4). I wish I'd done this earlier -- so much more flexibility and so many more apps! I have no problem using Media Controller -- works just as before.
Not sure if this is the right place to post this, but I'll give it a shot. Today I got a firmware update from Samsung. After downloading, my Gear manager no longer shows a search for apps option, no longer has reviews, and no longer shows purchased apps under the Samsung Gear Apps. I have been on the phone to Samsung, but they are clueless. Has anyone else encountered this? I am guessing that there will be a lot of unhappy people til they get this fixed.