What worries me is that the person manning the console has no "authority to act" (so we don't break the regs... cute), but is able to respond in an emergency situation. Side issue, the service is not being provide in this time, so why are they charging for it?
Main issue, during TIBA no service is provided, but someone usually monitors the frequency for emergency calls and response. So why not go TIBA for this particular purpose, IMHO, becuase it looks bad so don't do it, so lets hide all evidence of providing exactly the same service we do when decalring TIBA; by not declaring TIBA. But what is the difference, the pilot knows, the public knows and there is an increased history of TIBA use.
It's the same thing, without the situational awareness in the cockpit; = this procedure is less safe than TIBA.