James,
I'll see if I can make a demo up for you. I think most people are missing the boat where harmonizers are concerned. They need finesse to be acurate, and the balance is crucial. As for factory demos .... I never go by them anyway - they can be good or bad. I need to play with it in my setting before I know what it can do for me.
Give me a little time, and I'll try to record a sample for you !
Dave