Take it from someone who knows and actually rides bmx, someone who isn't leaving bogus answers..... (saying no tags) but they tend to be quite easy going hubs. Obviusly you can fakie without pedalling , so because of this, the drives tend to last ages becuase of the mechanism inside the hub body..
They're not that much heavier than your normal, reagular high flange hub either. If I was better at fakie-ing, I would probably run a freecoaster aswell.
Hope this helps a little.
Robski (BMX Expert)