thanks thafred: the pix on your site are terrific. The FOV on the Epson is more like a 60mm than a 40mm on the full frame.
Ted: my approach with the Nokton would be to shoot RAW and then apply an 'anti-S' curve to lower the contrast. Also, keep the camera settings you're using to minimum contrast; that way the in-camera jpgs will be softer, and the histogram will give a more realistic estimate of the brightness range of the scene. The histogram shows the brightness levels of the in-camera conversion, not the RAW itself, I think.
At the end of the day, though, the Nokton's a great lens if the scene isn't too contrasty.