You can re-enable on thermostat scheduling after connecting to zwave.
There is no “Away” mode, just the “HEAT_ECON” and “COOL_ECON” modes with NO “AUTO_ECON” mode 
. These modes display as “AWAY” on the thermostat and use the “AWAY” set points for the single mode “ECON” modes.
That there is no econ upper and lower setpoints in an AWAY mode is the only real drawback.
I successfully used the GPSTracker Binding and the OwnTracks app on my phone to define a geofence and switch between AUTO and HEAT_ECON modes where AUTO follows the schedule I programed into the thermostat schedule. I have not bothered to make the rule smart enough to choose between HEAT_ECON and COOL_ECON
If you think that is a STUPID restriction, I agree. But I already bought it. At least it has NO cloud connection.