The contacts are in my phone, and sometimes they display on the lock screen, but usually not. Today my support agent, Martin Vincent J , told me that 3rd party apps may not communicate with contacts while the phone is asleep. I find this hard to swallow because I've used the Bria app with a SIP phone and it worked 100% (displayed the contact name on the lock screen).
I've had two unresolved support cases on this. Furthermore, my colleagues that are also RC Partners have this problem.