There will be thousands of home security enthusiasts like me who use own DSC/Honewell security systems at home and have hard wired several (no battery and fail safe) sensors to the central unit. And the central unit will be exposed through EnvisaLink and or Hub6 to a monitoring company.
It will be nice if you could integrate with either EnvisaLink or Hub6 to get the existing sensor readings into your Home Monitoring unit. All this will be just software level updates and can be configured remotely at your end - just asking the user to provide details about the EnvisaLink or Hub6 which is already connected to the internet.