Nick, I admire your reluctance to jump on the the anti-Peter Paul's bandwagon.
I went and looked up some of the original postings from the CP mailing list, and there are really too many negative comments from too many different sources to ignore. There was also a definite lack of pro-Peter Paul's sentiment in the CP mailing list archives.
While your positive experience is encouraging, your experience should be the *minimum* level of service expected from a CP nursery, not a extraordinary example of good service that could be used to counter others' negative comments.
Finally, there is the open endorsement of field collecting given in the text of his book, along with some rather spurious reasoning.
I find this evidence sufficient to justify cautioning others against buying plants from his nursery.