We've all seen circling minimums published on regular approach charts. But have you ever flown an approach that wasn't designated to any particular runway, and has nothing but circling minimums published?
Vcc is commonly called "enroute climb speed", and it's always faster than Vy. Unless a steep climb is required to avoid terrain or to fly a departure procedure, cruise climb speeds allow you to fly faster, with a relatively small loss of climb performance.