I think DKG will have a Hyperion for a demo very soon. Take a few barrels of water, a watch, thermometer and run it with power going through a 3A fuse. Heat a barrel of water in an hour, or a whole pool in a couple of days. If DKG does it right, they'll have a number of scientists and reporters on hand and will be ready to take orders or give a solid estimated time to delivery.
As far as replication goes, I am leaning towards the Chan method--I think Rossi's internal heater may be a coil used to vibrate the nanoparticles at a resonate frequency. It should not be that hard to take a tube of MgH2, Cu, Ni, Fe and heat it with a coil/RFG at monitor the reaction for radiation. Maybe $5K worth of equipment. - Brad