I needed this today and was rare, but was something needed to verify information. I make a rule however at least one side must give me consent to view it. I feel that then gives me permission to look at it and is not like spying but reporting and investigating. Great addon hope I do not have to use it. worked on 1.4.5 just fine.
This is a great addon, but as I said in my review of the previous version - it should only be used in extreme emergency in order to not violate the privacy of members. Waindigo makes very high quality addons.