I've shot a little XX and agree that it is a low contrast film. It renders mid tones nicely, though

http://www.flickr.com/photos/52637134@N03/7160407271/

http://www.flickr.com/photos/52637134@N03/7345587518/

EI 250, developed in HC110 1:31 for 6:00 at 68F.