Even if you would manage to get plasma-nm running,
for sure there will be no automated updates for it.
It isn’t a part of openSUSE - and other major Linux distros either, as it seems.
So you will be on your own, without any ‘safe’ way.
is there someone who experimented plasma-nm 0.9.3 with 13.1 ?
what is a good method to switch to plasma-nm ?
you say “It isn’t a part of openSUSE”, “there will be no automated updates” . Are you sure ?
in yast software manager i see that opensuse supplies plasma-nm 0.9.3.1 2013 10 18 from source “opensuse-13.1-oss” and plasma-nm 0.9.3.2 2013 11 28 from source “opensuse-13.1-update” .