Thanks to @def_monk and @Flox for finding another requirement relevant to trialling our current “Built on openSUSE” rpms out.
I’ve updated the canonical “openSUSE dev notes and status” technical wiki entry accordingly and further emphasised that doc’s changing nature in this threads original post. In short the addition, a hard won finding, is as follows:
systemctl stop apparmor
systemctl disable apparmor
for Rockstor initiated samba shares to be accessible. Please read the dev notes for our prior status re SELinux and our plans/hopes re apparmor.
Hope that helps our early adopters of the testing channel re-launch to get just a little bit further.