Yes, a review would be cool!

Yes!
Should I do text or video? I don't like talking, but I wanna show the controller's functions :O

Well, if you have a camera, then a video would be awesome of course. As for describing and explaining, hm, you might blend in the text or use these annotations which youtube offers? Or you write text and refer at the according moment to external videos.

Yes, I have a camera OuO I'll record me using the controller, which is all I feel like doing. I might mute all of the video and add separate commentary later. :L