Anything you place against paint will eventually damage it.
I run the Famsa tankbag / tank panniers and leave them on 24/7 because the paint is toast.
If I have the tank repainted (unlikley) I will use a plastic protection film.
3 Continents - 7 Countries - 50 States
04 BMW 1150GS Adventure
02 BMW K1200LTe
05 Yamaha TW200
BMW MOA 109760
AMA Charter Life Member 518333
International Fellowship of Motorcycling Rotarians