Why the Admiral Hipper class kept specialized secondary guns

Why did the Admiral Hipper class not use the 3.5-inch SK C/32 as its secondary battery?

German designers preferred specialized weapons. The 3.5-inch gun fit neither role perfectly, although it could have been developed into a useful dual-purpose weapon.

German designers preferred weapons optimized for separate surface and anti-aircraft roles. The 3.5-inch SK C/32 did not fit either category perfectly. It might still have been developed into a useful dual-purpose secondary gun. The choice reflected a preference for specialization rather than proof that the weapon could never serve both roles.