hufty wrote:...my arguments for favouring Carradice Super Cs - they are in essence waterproof,..
Super Cs are not fully waterproof. Given sufficient rain you can end up with small puddles in the base.
You wouldn't, if you were wise, just ram your clothes and sleeping bag in with no other waterproofing and set off for a couple of weeks touring, as I routinely do with Ortliebs.
However, I agree that Super Cs are considerably better than any stitched Cordura pannier (old Karrimor, Altura Arran or similar).
I find the technique with fully waterproof Ortliebs is to have a designated "wet" pannier, in which everything that's damp gets put. There's generally enough damp-agnostic gear to balance the load (things like spare gas canisters that won't suffer when wet, but which don't hold enough water to get other stuff wet).