I've mentioned on previous threads that I am going to be shooting a B&W short. I will shoot in color and desat in post. I have also mentioned that I am using mostly shoplights consisiting of several different color temps. Halogen, incadecent, maybe even florencent. Although, I know this would not be good videography practice, I wonder would it even make a difference for the end result of B&W. Can anyone elaborate.

It shouldn't matter. On my old consumer cam (Panasonic GS200), it wouldn't even let me set the WB when in B/W mode. (and daylight and artificial light looked the same.

Wouldn't hurt to do a test if you have the time.

In still B&W photography, filters are very important; if you're shooting men and you want a rugged look, a green filter will darken skin details and deepen shadow lines (it will also enhance blush and lips). For beauty, a warming filter will mask blemishes & splotchiness (and it will lighten lipstick). A deep red filter can give an "infra red" look. In *theory*, filtering for color should have the same effect when you convert to B&W. Could be useful for enhancing certain character traits, and again, testing will show you how your specific lights, camera settings, and post techniques will affect everything.