I've just passed this exam. I'd say it was pretty tough, and time was a factor for me but I'm pleased with the result. Hands on experience was the real key - be sure to read the VMware documentation. I also thought Scott Lowes 'Mastering vSphere5' was very useful too.
Good luck to anyone else taking this soon.
Not sure what to do next, I'm sure something will come to me in a few weeks time but for now, it's beer time