We discussed this briefly not long ago in this thread. I can tell you that Wilson discusses it for a half dozen or so pages in his book, Mother Kirk (p. 121ff), but I can't tell you where his thoughts on the issue might be available online. If I read him correctly he's not really a regulative principle guy the way it typically gets treated on this board, because he suggests the (less regulated) synagogue model applies to worship in the church more than does the temple model. However, he's certainly not a "do whatever feels good to you" advocate either.
Must I also write the following disclaimer? Unfortunately, past experience tells me I must. "Providing this info does not necessarily mean I agree or disagree with anything the author in question has written, spoken or suggested by his associations. It's just info. And having his book on my shelf does not necessarily mean I bow before its content. I have a lot of books."