Some long -long- time ago, I used to go with three bodies, B&W, color neg and slides always loaded. With the advent of digital I used a loaded body (usually G2, M or a Nikon SLR) with B&W and used the DSLR for color. Nowadays, when and if I use film, I carry a Klasse, Contax T2 or Contax G2 with color negative and some NEXes. B&W only makes sense to me as a result of digital conversion, either from direct file out of the camera or as a result of a hybrid process.