What are you opening the file in? The RAW will always be colour, shooting monochrome is like setting your white balance, it's just a line in the file header that doesn't affect the raw capture data.
e: too slow!
So in that case what advantages am I gaining shooting in monochrome, rather than just shooting standard and converting to black and white afterwards?
In DDP you can just select it from the list of preset styles, in CS4 its a matter of converting them yourself.
Looking at your website im confused as to why youd have to ask this ? :-s
none other than being able to view it in B&W on the camera LCD
Thats strictly RAW though, I believe if you shoot in jpeg with one of the preset on then you will end up with a B&W images.
The whole point in RAW is that all processing is left to the photographer, giving you creative contro of the image.