Wheel with Centerlock hub for disc brakes and rim for caliper brakes
I've used such wheels for some time on my hardtail. First with V-brakes back and front, then switched to disk brakes as the frame allowed both types of brakes. I cannot say that I have experienced any issues with such wheelset.

My centerlocks hubs even came with plastic covers on disk mounting surfaces so that they would not become dirty when no disks are present.