As in all cases it depends on the authority under which rules you operate. We used for several years wet figures on any conditions except contaminated and reduced braking. That was approved from the local authority for operation under JAR OPS 1.
We only switched away from that when we introduced an EFB tool that of course can calculate values much closer to any relevant margin and therefore has to use dry figures on dry runways to allow further derate, higher assumed temperaturs or simply carrying more weight. Now we enjoy the fun of rotating at the numbers.