Your design is definitely way better in my opinion; much easier to focus in on any specific information immediately (and with no scrolling required).

The only significant usability change I'd make to both sites would be have the one who wants to know the details send a link to a setter URL of a known key (e.g. '/set/foo') which would both display the information to the user and send the information to the server so that '/foo' now persistently displays the same information. That way, any potential user (say, an IT helpdesk person) doesn't require any expectations of the person whose details they want other than the ability to click a link.