Hello,
I have integrated ecobee into HA but the issue is that I dont want to have full control from HA just interested in viewing temp across all sensors.
Never mind just found it 
Please post the answer here in this thread, so other HA users of Ecobee (like me!) can benefit. Thank you!
So all I did is instead of adding the thermostat card in the webui which gives you all the features I just added a card to display only the temperatures from each sensor. I also added the card below to display the presence detection of each sensor.
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Thank you! Now, if only I could show one card or the other based on which phone app user is connected . . . (Gotta keep the wife from twiddling the thermostats, you know!)
You can use this:
And this, with a binary sensor for each user that drives the condition statements:
To accomplish per-user / device configurations of your views/cards. It’s not great, but it’s possible.