It seems the legal status of the Z-Wave stanard has vastly improved. Could you please re-evaluate if packaging would be possible now?
See e.g.: https://groups.google.com/forum/#!topic/openzwave/3rmb5a-IDWM http://www.eetimes.com/document.asp?doc_id=1330383 Thanks to everybody involved for the hard work in creating Debian packages! /ralph