Some years ago I published an article in a Copernicus Open Access Journal. They have a peer review process called Interactive Public Peer Review, i.e. the pre-print and the reviews are open access. Additionally, everyone can submit a comment on the pre-print.
I liked this openness, although I didn't get any extra comments other than those of the reviewers.
Some days ago another scientist told me that several scientists have concerns about this openess. They don't like the idea that their work can be commented by everyone.
I would like to know why there are concerns and how many scientists have concerns about this sort of peer review process.
Are there any studies or surveys answering this question? Are there any reports about the effects of this sort of peer review process?