Well, maybe there's hope but it doesn't work correctly for me and I've tried repeatedly.
I have a brand new QolSys IQ2+ not in service yet. I did get it to join to that, but the results were wierd. I've posted fairly detailed info here: 2.2.4: HE as secondary z-wave controller not working - #12 by dcaton1220
I've gotten it to pair a few times with the alarm panel installed in my house (same brand, Qolsys IQ2+) which has about 20 zwave devices and ST paired as a secondary. But with that one, HE didn't create any devices and in a few cases the zwave system seemed to lock up as I couldn't even access the zwave configuration page. Several reboots and zwave radio resets eventually cleaned things up. A few times it got as far as the alarm panel asking for the security key, sometimes it doesn't even get that far. But the end result is always that I have to reset the zwave radio in HE and reboot at least once.
