BTW, I've done it both with and without foiling (in order to get through the VERY long stall). Despite the nice bark, I liked everything else about the foiling method better: more tender; more juicy; still plenty of bark and smoke. But most of all, more predictable times. When I tried to do it without foiling, I got up at 1:00 a.m. to start the cook. At 8:00 that evening we were still waiting for dinner. And while the bark was amazing, everything else was worse. I got almost no pan juices which, to me, are one of the most important things you get when doing pulled pork. "Liquid Gold" is what some people call the juice, and they're right.
However, there are LOTS of good people on this forum that totally disagree and like the un-foiled results better.