Can I still shoot in color with the same camera?
Yes. Monochrome is a mode you switch on — turn it off and the very same sensor captures full color again. One camera, two ways of seeing, frame by frame.
Why shoot monochrome in-camera instead of converting a color file later?
Because you get a genuine RAW negative, not a converted picture. Pixii reconstructs the true response of the sensor and writes it as a single monochrome plane with up to 16 bits of latitude — the full tonal range to work with afterwards. And shooting mono is a creative commitment: you compose for light, shadow and form from the first frame.