Until the advent of sealed bearings people used unsealed hubs for years without problems. They require an additional level of maintenance than sealed hubs but if you're prepared to take that on, and all it means is that you have to strip them out, clean them, then repack the bearings with fresh grease every few months, then they are fine.
Everyone should suffer loose bearings and Campag at one stage of their lives and then move onto sealed bearings and functional kit all will be well in your life. :)
Everyone should suffer loose bearings and Campag at one stage of their lives and then move onto sealed bearings and functional kit all will be well in your life. :)