DC has greater implications on strength then hypertrophy. The only pro bodybuilders I know of that does DC religiously are Dave Henry and Mark Dugdale. But DC isn't really new or revolutional, Dorian Yates trained in a single working set style and before him was Mike Mentzer, who wrote a bunch of books called High Intensity Training. I think the only thing DC added to High Intensity training was "extreme stretching."
I think DC is fine to switch back and forth on from traditional bodybuilding. The sets and reps range in traditional bodybuilding is more effective for muscle size, whereas DC training has a primary effect on neural adaption(s) (increased motor unit muscle recruitment per contraction, increased neuron firing rate) which have primarily strength implications.
I did High Intensity Training for about 6 to 8 months to try it out. I did get much stronger, but once I returned to traditional bodybuilding I gained much more size and musculature.
If strength is your goal, DC, High Intensity, 5x5 is primed. If musculature is your goal, I'd stick to traditional bodybuilding.