Yes I have been through it. We were instructed not to share too many details about the assessment itself, but I can tell you that unless you are a complete tool in regards to human interaction and organizational skills, its nothing to sweat. In fact, its quite fun and eye opening. There aren't questions per se, but rather a bunch of scenarios. You will barely have time to get everything done, so as long as you are good at managing your time and are able to work a schedule to completion, you will be fine. Because you barely have a free minute, it goes by real fast and before you know it, its over.
Good luck and keep us posted!