to clarify some bits about available Z-Wave dongles for LMCE:
The Seluxit viaSENS Home Controller (868Mhz) (http://wiki.linuxmce.org/index.php/Seluxit_viaSENS_Home_Controller
) _works_ with some tweaks and will probably be plug and play in 0710 (changes are in the pluto trunk and should be included in the next LMCE build).
ACT provided a linux driver for their ACT ZCU Interface series (ZCU101 for US and ZCU201 for 868Mhz). Unfortunately the driver was written for 2.6.10 and did not work with the LMCE kernel version. I did some patching and it now loads on 0710 and seems working. I don't know if it will be plug and play in 0710 but the basics are now done and there will be Wiki instructions for manual installation soon (installing the kernel module and adding the new usb id to the ZWave device template).
Seluxit was very helpful and gave me a test sample to be able to develop support for LMCE. They also provide me with a Multisensor in a few weeks (http://wiki.linuxmce.org/index.php/Seluxit_Multisensor
) to add multilevel support (temperature, humidity, light level) to LMCE. Maybe you want to honor their assistance and get some of their products.
The newest Z-Wave devices also send feedback when switched locally. Support for Floorplan updates will come soon.