I guess I disagree. I don't have temp control issues, very minor ones at the worst I can let it alone for 2 hours with minimal change in temps. I've held 300 for a two hours before too, charcoal eating sucker, so it would be labor some any longer than that, but it could be done.
In the past I've no issues doing drummies, thighs and whole birds on my ECB @ 250. I usually crank it wide open for the last half hour to crisp-en things up.
The skin was okay on those wings, it was far from perfect, but it bit right off. The meat was tender and juicy. I just didn't think much of the injection everyone was raving about, the wings weren't terrible, they just weren't that great.