I absolutely would not depend on HSM for use with a monitoring service that could dispatch police or fire. All it takes is a simple mistake in HSM setup, or one small bug in a hub update and you'll be paying out of pocket for an unnecessary dispatch of first responders (at least, this is how it is in most places in the US).
See this recent thread for some relevant suggestions: Alarm/New Build/HSM/Noonlight/Konnected
