About durability, if you plan doing many highway kilometres, your rear tire is going to get flat fast, front tire still is okay for 11000 KMs, but at the rear is too far gone ride anywhere.
Personally, I would buy it again, very forgiving tire, good grip at all-weather, albeit a short life span. (Keep in mind a GS500E is close to 180Kg wet, so a lighter bike might get a bit more life out of it)

