I guess it should be possible to have LMCE run as a secondary controller in a zwave network where Merten hardware takes the primary controller role. I am trying to figure this out with Merten switches and a Merten USB stick, together with MiCasaVerde as a secondary controller. If that works, I suppose it should work with LMCE as well!
That would solve a lot of problems for me.
If and when this setup is running, I will report back in this thread.