Digital BW, The Print

Guys,

I appreciate all the discussion on conversion to B & W.  I am
wondering if any of the Mac users may have any thoughts on using
iPhoto to do the conversion to B & W.   It would appear that by using
the Adjust palette that one could simply move the saturation all the
way to the left and then use the R, G & B adjustment to refine the
photo.  iPhoto offers the ability to brighten and adjust contrast as
well as sharpen the photo.  Is this workflow too simple or am I
missing something?

Many thanks,

TEF