I gonna add some locks to my Zegas instead of padlocks. Each pannier lid has provisions for two locks on each end, so should I:-
1) Add all four locks that all share the same key?
or
2) Add two locks to one pannier that share the same key, then add two locks for a different key to the other one?
or
3) Fit two locks with different keys to each pannier?

1) Add all four locks that all share the same key?
or
2) Add two locks to one pannier that share the same key, then add two locks for a different key to the other one?
or
3) Fit two locks with different keys to each pannier?


