I went with
Code:
( dbus-monitor "interface='com.lab126.powerd',member='goingToScreenSaver'" --system; killall mesquite; powerd_test -p; lipc-set-prop com.lab126.powerd preventScreenSaver "$SSSTATE"; lipc-set-prop com.lab126.pillow interrogatePillow '{"pillowId": "default_status_bar", "function": "nativeBridge.showMe();"}'; ) &
I still get a spurious "app could not be started" in the background that needs killing off (with a simple click) after this runs on the PW.
It is, however, a "nothing" error in the grand scheme of things. I could investigate further but it's something and nothing and utterly benign