, you wanted feedback on developing with the SmartWatch 2 SDK. Well, here you go.
After stumbling through your developer portal  I finally found the page where I could download the add ons required developing for the SmartWatch 2 .
Then I had to scroll waaaaay to far to find the url required to add the sdk  to my $ANDROID_HOME.
If you have trouble finding the url on the first or second look, don't be ashamed. I had troubles finding it as well.
That's probably because it's hidden somewhere in between a pile of SDK Manager screenshots.
After downloading it I went to my "$ANDROID_HOME/add-ons/addon-sony_add-on_sdk_2_0-sony-16/libs" directory, to get the API and Utils required for developing. If you have been there you probably found three libraries.None of these is either the Smartwatch 2 API or Utils!
Being already rather impatient at this point I asked someone where Sony has hidden the required libraries.
Guess what, they are
placed within ANDROID_HOME/add-ons/addon-sony_add-on_sdk_2_0-sony-16/samples
But at this point I only could help and think to myself: Well... At least they have shipped the SDK and Utils.
Great, so I enter one of the directories, only to find the sources
of the required libraries. None of these have been packaged to a reasonable format such as .aar or .apklib.THANKS AGAIN!
After packaging the libraries to .jar and .apklib (yes I'm still using maven for a project, hit me) I'm now finally able to start developing for the Smartwatch 2 with the officially released SDK.
This is not user (developer) friendly at all. A lot of developers would have just stopped the process somewhere in between.
If you want to do it right
, just upload the API and Utils to maven central  and provide developers with an easy snippet to integrate these within their gradle or maven projects.