The ARAYA Randonneur seem to be a very competent touring/camping bike but the name is a bit missleading. If your interested in riding in organised randonneur events there is no need to bring a full camping kit. Like Homeyba said there is a rather large difference in weight and the thinner tubes of a purpose built rando frame will plane and reduce road buzz better witch is a big advantage when you spend long hours in the sadle. Why not have a look at the ARAYA EXCELLA that is also shown in one of your links or Surly Cross Check and such models. They'll should be better priced but still rigid enough to handle enough camping gear for week long touring trips.