Aye, that be they! Got mine from the LBS with me burfday money, there is a slight sound when pedalling, similar to a faint ratchet and pawl free wheel sound, but when actually freewheeling, completely silent, they are running on a Centaur groupset, my previous wheels the OE ones were Fulcrum R7's, the free wheel ratchet on those babies was loud enough to wake Marco Pantani!
Another thing, they are easy to get tyres onto as well, the R7's were a nightmare, funny really as the Fulcrums are made by Campagnolo.
But Yes I am very pleased with them, and purchased for a good price too, have had to change my tubes though as the rear wheel profile is 28mm and none of my valves were long enough, couldn't get hold of a valve extender from LBS all sold out.