You may have provided this before but do you have a link for the correct hose? Are the standard hooks without inserts 16mm? Is this the outer diameter of hose you need? Any sourcing complications with regard to the inner diameter you need to fit your particular rack.
Am I right in thinking that the inserts for the new QL 2.1 hooks (the inserts that go in from the side) are meant to be specced to reduce/cut this rack wear? I just fitted some QL 2.1 hooks and inserts to my Ortliebs today and the insert material did seem different.
I’ve been using Tubus racks for the last few years which all have 10mm rails and stays. I went onto
EBay and bought a few metres of airhose with a 10mm INTERNAL diameter. The hose I bought fitted the inside of the hooks exactly but only if I removed the inserts. My aging rear panniers have the QL1 system and my 3 year old (I think) front panniers have the newer QL 2.1 system. This also wore hot spots into a Surly front rack I have (also 10mm) so I didn’t mess about and swapped them out as soon as I could.
Like you, I have had a bag detach late one night, lost somewhere in a forgotten European town. Not what I needed. And it tore off a buckle on my pannier. Cable ties to the rescue, but Ortlieb sell all the spares you need. I have not had this happen since I started using airhose. You can’t really notice the airhose on the racks when you aren’t using panniers. Good adaptation I think.
EDIT: In very hot weather, the top plastic rail/strut that the top pannier hooks slide along has become soft, resulting in a bowed rail/strut. Easy enough to leave in the sun and straighten up.
@Tim330 : I did meet a young German lady on tour using Brooks panniers. They looked very nice, but I have no idea what the long term reviews or specs are.