Difficult to see what wear you are talking about in the photos. I guess it's black marks on black fabric - always difficult in a photo.
I don't have a Delite, but considering one, I can only talk about my experience with other bikes and my current Supercharger.
Panniers will always wear, it's just the nature of the beast, but at least the Ortliebs have a waterproof coating on the inside as well as the outside. The question is what does wear, and how that can be reduced.
Hard pannier plastic against the frame/carrier. This I try and avoid at all cost as it is the aluminum frame that will suffer and quite quickly wear through. I protect the framework by using insulation tape or preferably something like thin wall irrigation hose to the frame. You can see a piece of hose that I split and taped in place in the carrier photo. It might look ugly, but hey, I'm long past worrying about that sort of thing. [Edit: added second photo showing one pannier in place.]
View attachment 181403View attachment 181405
Pannier fabric against the frame/carrier. No real protection against this, the fabric will eventually wear though from the continual movement - I've had panniers held together with sticking plaster in the past! If possible I try and adjust the pannier so that the fabric sits against the frame/carrier. In the photo of the fairly new pannier, you can see the carrier wear marks on the fabric, the pannier deliberately set up so the hard plastic was not against the carrier.
View attachment 181404
Hope that is of some use.
Can I ask if you have any heal strike on your panniers with the Delite? The carrier seems to place them much further forward than most bikes.
I’ve had similar issues and ended up experimenting with different protective layers—sometimes even cutting old inner tubes to size. On a side note, if you’re into tweaking gear setups and like precision work, you might enjoy exploring creative side hustles too. I got into photo editing this way, and this guide
how to start a photo retouching business gave me a super clear starting point. It’s all about finding the little details that make a difference—just like with panniers!