Should be ok. The Samsungs have serious problems with the HDMI-ARC stuff that the newer Sonos hardware uses, but the older Playbar is s/pdif only so you will avoid that set of issues.

You’ll need to connect the playbar to your TV via optical, and configure the TV to send its audio through it as DD 5.1. 

The Series X and the One X will work identically in this scenario, so you can set it up and verify it on your One X before the Series X gets delivered on Nov 10.

Happy days! Thanks. You mention a Playbar. I have a Playbase but assume that’s what you mean. Essentially, I shouldn’t be affected and have the same setup? 

Sorry yes, for the purposes of my reply it applies to both Playbar and Playbase.

Thanks for your time and effort, much appreciated