I'm pretty happy to finish out the year with passing this exam. There is certainly a lot of overlap in generic material from the CCNA (subnetting, emacs etc.) and this really helped me get through this material. I wasn't happy with my scoring on firewall/COS so I'm going to have a look at them in the new year.
I would highly recommend anyone who has recently passed the CCNA to take the time to go for this, it should add value to your CV/resume. With the availability of a 50% voucher through the fast track program and the PDFs on there too, it's a relatively inexpensive route in to the juniper world.