So I managed to get them both installed before the system went down just a bit ago. They paired pretty quickly as a generic zwave multichannel device:
I’m still toying with the settings, but my first impression is they’re a little on the insensitive side. Working out whether that has to do with the illuminance control setting (lights only come on when the room is dark enough). I’ll wait a bit longer until it gets dark out to mess with it, but so far they’re OK.