I think I have a very similar set up to yours. I keep the switch to the heating on (not using the scheduler) and the thermostat handles shutting off at night/when we’re away/etc.
I had a little troubling installing it, but I’m an electrical noob.
Also, I was already a mostly-Zigbee house, at that point, so Zigbee made the most sense. I also have Z-Wave and Matter/Thread devices, but a much smaller number.