2 pointsIf you like grain , then use BW stock. Color film does not produce the same grain structure as BW film. You can add digital grain to color converted to BW, but it is not organic and is more like a grain screen that is the same all over the image. For BW panchromatic shooting you can get by with a yellow, orange and red filter. Unless you need a green for foliage or skin tones. I like the orange filter as an all rounder. This was shot with an orange filter on a monochrome sensor.
1 pointFor what it's worth... If I were shooting a b&w movie, I would probably shoot in color and convert to b&w in digital color correction. With this method one can create the effect of any color filter during the conversion so it's a lot more versatile.