Bob,
I'm using FireDaemon on 6/8 PC's and it works just fine...
You have to be carefull not to set the ECCp cli has a normal priority as it slows considerably the computer, u must put it in idle priority.
I haven't tested the permanent connection thingy but hey at the end of the day CTRL+X / CTRL+V and off they go...
Here's an idea:
Before installing ECCp as a service open the GUI client, set the configuration u want and then install the GUI client as a service...
I've installed the ECCp client in GUI mode in the computer I'm sitting now and the only thing I noted about it is the dplist file growing from time to time.