Can I ask how large the rooms are and if some of the rooms are very large, will you be wanting deep bass in any of these room to
With you mentioning Sonos, I'm guessing the house is being kitted out with an array of
Sonos Amp which you will control via the S2 Sonos amp
I'd say both speakers should work with the Sonos Amp's although I'd pay special attention to the size of the driver and ensure you get the largest one which also offers the best sensitivity. Now having said that, I'm used to Kef's and know their strengths whereas I've never heard an Origin in action (so if you get a chance of listening to either the Origin's mentioned or the Kef's I've mentioned, please follow your own experience as this is more important than anything any of us can say)
My gut would say that you should request some better Kef's as Kef have always delivered a wide sound over a narrow one meaning that they also work perfectly for musical playback even if they cannot be located in the perfect places (oddly this kind of means they are less focused however this is not the case, its just the way they sound allowing for a wider dispersion of audio sound in the room meaning you can listen to a good realist performance, even if you cannot sit in the ideal position)
My suggestion would be to request Ci200QR (or equivariant if you are not in the UK - think you might be in the US based on the Kef Models mentioned) as these should work well with the Sonos Amp's and also enable more than just background sound like some speakers do when fixing them in the ceiling