I regularly shoot in color and my images are always in the RAW format. That said however, if the resulting photograph has a chance of looking good in black and white, NIK Silver Effects Pro is trotted out to process it. The image above is a good example of what I mean.
It started out as a decent image of a down and out guy scratching lottery tickets in front of a real estate office. The light was good but the ghastly purple color of the office window design was horrible. Changing the image to monochrome was a revelation! All of a sudden the window’s purple tinted squares became lovely shades of gray and the figure’s rumpled raincoat was set off well by the widow’w short straight lines.