Euromanx out of the Isle of Man are operating with B1900. There operated by a Danish crowd ( Registrations PH-RAT and PH-RAR). if I get there name i'll post it up, but i've seen there layout for the loadsheet done in the cockpit. Very basic computer printout, incorporates all the possible pax weights and all you need to do is add the basics, bags and draw a line. Done in about 3 minutes every time.
Hope this helps