Another note about the options for processing . . .
The reason for making one of the cameras with XP2 Super was probably that this is a C41 process emulsion and so can be processed at any cheap local colourprint lab without difficulty. The film also has no extreme base-colour (as the Kodak C41 b+w film did/does) so can be printed easily on normal b+w paper after you have the lab-prints.
In other words it is not necessary to choose the traditional HP5+ emulsion if it will be tricky to get it processed (say if you have thirty cameras after a wedding or something) - just use the XP2 Super instead.