I have two copies of the older 40/2 SL (RGB striped, no close-up lens supplied), one by a strike of luck and the other deliberately purchased. Really nice lens that I find very suitable for street/documentary, it's among my absolute favorites for walking around with the Df in daylight. Wide open it reminds me of the 35 Summicron look, and dimensionality is IMO exceptionally nice at f/2 - f/4 on the Df.
Archive is at the studio but here's a few from today, Magne (NOR) making friends with my daughter and father