When you visit the site it says Jehovahs-Witness big and bold. A PIMO might be browsing the site and a JW might come up behind him unexpectedly and notice he's visiting a site about JWs other than jw.org, which can lead to the PIMO reported for viewing apostate information.
To help remedy this risk, i was thinking about the possibility of having a button that activates an undercover mode where the title of the site is not prominently displayed so it's not easily apparent to an accidental eavesdropper that it's an apostate website. Also, the color-scheme and graphics can be different so that it doesn't look like the regular site.
This might be implemented relatively easily by using a little javascript to swap the regular stylesheet(s) for another stylesheet(s).