Can't recall ever seeing a cross-bolt trigger-guard safety on any double-barreled shotgun, whether O/U or SxS, And kinda doubt any German manufacturer did it!
I doubt it too, but have learned to never say never about most things. Actually, that SKB selector was in the rear of the trigger itself, not the guard. Pretty little gun, but I struggled to hit anything with it.
My new CZ has a non-automatic safety with the selector on it and mechanical triggers. Only complaint is that you can’t switch barrels with the safety off. Don’t know if that’s typical for the type as it’s my first.