If you want crisp skin, you know you"ll have to go at a higher temp, say 350 + - empty waterpan etc. I do a lot of low/slow chic, but almost always butterflied halves. For bone in breast, I would go with a 225 grate temp and don't let the meat get over 160. I expect they would be good. Some people have written about trying to crisp the skin at the end over a gasser or some other method. First, most of the fat has rendered so I don't think it would work well. Next, you could easily end up overcooking them. If I felt I had to have crisp skin, I would go with the higher heat cook, which is really indirect grilling, imo.
Paul