Update. I sacked this off and returned it. Wasn't happy with the feel/quality.
Also, I am UK based. Pretty common to find the existing light switches have a 2-wire connection with a rocker switch, either on or off, acting as a switched live. Apparently in the world of smart lights, momentary switches are more commonplace I. E. Press once, toggle, hold to dim, release, hold to brighten. Etc. You get the drift.
I've bought a stack of these mini dimmers for less than a tenner:
Turns out it's a doddle to add one of these modules to the actual light fitting/loop. I sent the pull cord zigbee device back, got my £35 quid back, and added a standard momentary switch instead of a cord.
Switches are readily available from screwfix for a fiver. Plastic too, so no safety issues regarding a lack of earth at the switch points. I've bought a stack of them.
Summary
If you're lucky enough to have your light switches earthed, there's a huge variety of sexy metal switches and facias so you'll be able to make use of the 2nd gang or even add multiple dimmer/switch modules. I wanted to add some grid-style switches, maybe 4 of them to replace my single light switch to control blinds, scenes etc. But the lack of earth meant I needed to stick to plastic, seriously limiting the choices.
