If you have any specific questions let me know, I might be able to answer them.
Thanks for sharing your experience! We still haven't done anything - not having funds readily available will do that :p
How doe the switching between units work? Have you scripted up something to switch the VLANs or do they provide control software? They are a little light (in my opinion) on their web site about how the control for the virtual matrix switching works so it would be nice to hear from someone using them.