After using the Cineroid EVF for over a month I am confident it is a very good product.
Priced $799, this type of accessory is from the kind that will escort you to your next shooting device as long as it has an HDMI output.
In my video review I should have mentioned under "what type of improvements I would like to see"?, a USB connection for future possible firmware updates and a squeeze mode to allow the use of anamorphic lenses.
It is worth mentioning that this company is starving to give excellent service and its American distributer is present in user forums like dvxuser.com
For more details please visit Cineroid home page: cineroid.com/web/eng_ind
Camera: Canon 7d