There's no reason to not do both.
Also a quick NFC sticker in each room taking you to a small HTML site containing settings (temp, ventilation, lights, shutters, setting a alarm by the lights) has been golden.
No one wants to: download Shelly app + AC app + look for ventilation IR controller + figure out how casting works for the TV + figure out how to use the Shelly app to turn lights into an alarm. It's too much friction for little gain. But a quick tap? Great.
But tapping your phone on a NFC sticker bringing all those controls together per room in stead of per category (all lights in Shelly app. Person in room #1 has no interests in the lights in room #4 at the same time.).
IF you tap it while not on Wifi yet it just tells you to connect to Wifi. :-)
One "all house" sticker next to the front door allows any last person leaving or first person entering to put the entire house in active / idle mode.
Works wonders. And as soon as local AI is quick enough the stickers will be a microphone!
The regular-ceiling-lights-as-alarm service gets positive feedback. Weird how smarthome companies never market that, seems easy win.
We have 8 light buttons in our living room/dining room/kitchen space. It is very convenient to us that we have 1 button for turning all of them on/off at the door to upstairs (at night turn off all lights and go to bed upstairs, in the morning come downstairs and turn on all lights) - but also have 1 on/off button near our back door for when we leave/come home.
Next to that: on/off toggles a schedule where the lights are bright and cold-ish by day, and low and warm by night without us having to manually adjust each light every hour or something.
Again, need is a big word. But it's very convenient and pleasant.