I've used a Jupiter 9 85 / 2 on the CL wide open.
This was taken from about 5 metres:
http://www.flickr.com/photo_zoom.gne?id=236996158&context=photostream&size=o
This was taken from about 7 metres:
http://www.flickr.com/photo_zoom.gne?id=236996044&size=o
This was taken from about 3 metres:
http://www.flickr.com/photo_zoom.gne?id=236996454&size=o
Film used was Capitol 400, which has really large grain.
These pictures exhibit some motion blur from hand movement (they were taken at 1/125s, but I have unsteady hands), so they are not the best examples to evaluate focusing ability with. If you are not looking for extremely sharp photos, shooting at a low enough speed will negate focusing mistakes in any case, and you might be able to live with the product.
Clarence