I have been shooting with it for a couple of weeks but have just now added the EVF. The Lens hood is a cheap knock off from Ebay. The grip as well. Sony only offers a thumb rest that mounts via the hot shoe. I would think that the EVF couldn't be used at the same time as the thumb rest. But the grip I got keeps the hot shoe free. Also it is quality made. It feels like aluminum.
I'll try to get up a review this week end. In the mean time if you have questions feel free to ask.
Sony RX1 by Cosmonaut's, on Flickr