Just a follow up note about the Veti 2 light switches that are perfect for Sonoff's since they are flush and don't have an on/off position.
I had an issue with the single common live input, messaged Major Tech and they responded quickly. They sell it in modular 2 way switch components...So you buy the fixing frame and can either have it in either 1, 2 or 3 gang.
I went to their showroom and they were very helpful, taking time to open packing to show me everything. Now nobody would know that my lights are smart, and the toggles being the wrong way around is a thing of the past.
View attachment 857851
They also gave me a little blue led that connects to the individual modules so that you can have a light, supposedly works without neutral - but I only have the Sonoff's 3v in the wall so I don't think it will work.