Thermostat: Will ST settings override tstat settings?

Just installed the Ecobee SI thermostat and added it to ST. (awesome thermostat, by the way!) I set up the scheduler through Ecobee, but am curious if settings in ST will override those settings. For example, if I set Ecobee up to go to “away” mode at 2pm but I leave the house with my presence sensor (my phone) an hour early, will that override the Ecobee schedule and go to “away” mode?