Hi!
Two Haibike sduro fullnine 2019 8.0 and 4.0, original chains kmc e10.
On the 8.0, chain wear 0.75% in about 900 Km (ridden by me, mostly eco, std on steep slopes, always used the big cogs)
On the 4.0, chain wear 0.75% in about 500 Km (ridden by my girlfriend, used a lot of assistance, possibly wrong gearing sometimes on steep slopes).
Both chains have been taken care of, degreased and lubed after each ride.
When I bought the replacement chain for me there was also another one with rust protection (EcoProTeq).
I opted for the simple one because:
a) it was cheaper
b) my original chain looks brand new, no way in hell it developed rust in 900 Km, I see no reason to pay extra to protect from something which won't happen because it wears out quicker that it rusts