+1 the Sonos is more for the client who already had Sonos or only wants Sonos. Then at least now they can have some level of Rti control. It also opens up to using Rti for zones with rkm1 keypads for quick basic controls without finding the iPad. It's a nice little upsell to add the processor and keypads in each zone for the convenience it offers the client. And opens the doors to possible automation and universal remote upgrades in other parts of the home.