I’m thinking of using the plastic Vario Top Case on the planned BDR ride this summer. It seems like chances are slim that this would get cracked when dropping a bike with engine guards but I suppose anything is possible. Anyone ruined one of these off-road?
I may just go soft luggage and not worry about it. On the other hand, it is very convenient.
I think the Vario topcase should work fine for you. The cases/panniers I think would be much more prone to breakage in a drop, and easy to find examples online of people breaking them off and having to rig them up to complete the trip.