The razor-thin DOF wide open could actually be a challenge at closer focusing distances. My personal use of this lens would be "medium" focusing distances, such as with whole-body environmental portraits. At these distances, the DOF should be workable. I personally like this example (not my own, because I don't own the lens):
Untitled by Cat Zheng, on Flickr
For me, this photo shows the real potential of the Mitakon. After all, for close-up, shallow-DOF portraits, we already have the XF56 and XF90.
Thanks for the YouTube review, by the way. I have seen it before but I like Jonas Rask's review better, simply because he's a great photographer.