Interesting, we cannot be PROPER barbel anglers as they all us, BRAID.:wh
Had this discussion before, I find the moment you ask other people why they use it, they get all defensive and aggressive.
For me I think braid is not heavy enough ( the coated stuff by its nature has a plastic outer-coating, that floats.) Non-coated braid leads to tangles, so people add gadgets/weight rubber to stop tangles. This then adds more components to the already complicated rig!
There is nothing better than a simple swivel, buffer bead, and nylon in whatever make you prefer. Or a simple shot on the line/freeline. I like Binka now like Supplex, but normal Sensor, or Berkley XL is just as good.
As long as your confident fine. I just ask myself each time I add something, do I really need this. Better to have as little between me and the fish, in my humble view?