Here is how to replace the original with this modded version without loosing
ANY extensions/settings
In short: backup apps+data in Titanium, install modded versions, restore data in TB, reset the watch, unpair, pair again, start Smartconnect, re-add watch widgets. Done
More detailed:
Download Titanium backup (needs root)
Backup app+data for Smart connect and Smartwatch 2 app
Uninstall Smart connect and Smartwatch
Install APKs from OP
start Titanium and restore "Data only" for Smart connect and Smartwatch 2 apps
on the watch: go to settings and select Reset watch
in the phone, unpair watch in Bluetooth settings
Pair it again
start smartconnect/Smartwatch2 app
Note:
* user-installed widgets, placed in watchfaces will seemingly be there, but you will need to re-add them.
* give the watch some time to install extensions/wallpapers/settings from the phone
Seems to work fine! Finally I can ignore those idiotic big margins in the Distance widget for example!