not the pro definity but i have used the ordinary scolmore click range with no problems. i like them as they have a scew fixing to the faceplate so are not reliant on a plastic clip. unless you are using lots of switches you can mount four on a faceplate without a yoke
looking at the click 4 electrics site and if you only want two switches you should nt need a yoke but you might have to create a small lip in the plasterboard for the box to sit in to enable the flat plate to sit "flat"
there are plasterboard boxes with very small mounting "ears" but I imagine they require a very neatly cut hole so the box doesnt fall in. they were mentioned on here a few days ago
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