Dual node vs "Reliable IP" Architecture

http://www.nspllc.com/New%20Pages/Reliable%20IP%20Nodes.pdf Argues that by going from a dual-router POP design to a single redundant router configuration, I can reduce annual downtime costs by 93% (?) and reduce CAPEX and OPEX (seems logical). Also mentions that the single redundant router can get closer to the ever-elusive 5-9's. Anyone doing this in their network? Is there validity in the claims in this white paper? Anyone looked at the Alcatel product that apparently funded this paper? Pete.