Only in regards to Zipp disc longevity - Another racing on an old Zipp disc; a Zipp Predator which was their first disk before the 1150 and 950. The wheel structure is still great, just needed the hub rebonded to the wheel as the glue can eventually fail. But that is only an issue for a rear wheel given forced from pedaling. In regards to parts availablity, the hubs are simple and any machine shop could make replacements.
PS was also still pursuiting on a set of Fluidisk's!