Aqara Light Switch Question

Long time lurker, first time poster.

I’m going to take the plunge into Home Automation and I’m trying to work out what kit I need to order.

I like the idea of the dual switch that Xiaomi do that wires into the light switch. Everything I do needs to have a smart ‘physical switch’ so lights can be controlled without home assistant if needed.

https://www.ebay.co.uk/itm/Xiaomi-Aqara-Intelligent-Wireless-Light-Controller-Wall-Switch-ZigBee-Version/232621556455?hash=item36295342e7:m:mkq-Yz5w8p4m0_lAqkGV5RA

I have a single gang switch that does the main light, but I would like to replace this with a double gang, where only 1 gang is wired to replace the main light switch and the 2nd switch is not wired just a ‘smart switch/button’ that controls sonoffs for the lamps around the room.

Does anyone know if the 2nd switch would work without physically being wired up?

There are 2 options for this switch, with neutral and without neutral. Can someone advise on which one would be best for my set up?

I’m in the UK if that helps.

Thank you for your help with this.