Just posted a few days ago, YouTube member djteebz appears to be the first with his review on the little 5.6" external LCD. The video below is an unboxing, run through of the feature menu, along with some pros and cons with the Canon 5D Mark II.
Where's my Swivi Review? Well the Swivi has a built in miniHDMI male ended cable. This connects directly to any camera with a miniHDMI port, but because of this you can't use it remotely with a long HDMI cable. So before I posted my own review I ordered a small miniHDMI female to female coupler.
(click image for product)
This little coupler (ideally) would allow me to use the Swivi as a remote monitor if I wanted to use it on a Jib / Crane. Well unfortunately shipping from overseas takes several weeks, and i'm still waiting. Swivi units are available on eBay (click here)