At one point I had tried modifying the Zwave Device Template to add the Intermatic stick to the PNP section. It was detected, and the Zwave module was loaded up, but it failed while trying to start the device. Switching from a usb-serial adapter (as in the ZCS000) to a native usb interface I think will require work in the Zwave module.
Pete... see my new post on supporting the ZCU201 here; http://forum.linuxmce.org/index.php?topic=3665.0
The issue is that ACT have used a new USB to UART chip that has no current support under Linux. Phil at ACT has provided me with the source to a partly working Linux driver... which I can provide to anyone with an interest in working on the code to complete it. Zensys have confirmed that there are no backward compatibility issues with the newer z-wave firmware used in the new ZCU201 by the way.
Another approach would be to simply buy the pure RS-232 version which should just work as the 'incompatibility' is purely at the USB level. However this might break PnP detection.