Digital BW, The Print

Austin (or anyone else)...Saw your reference to monochromatic 
sensors and I would like to know more.  Googled it, but did not see 
anything relating to photography.

Also, I heard something months ago about someone that retrofits 
dslrs with a "B&W" sensor.  Is this the same thing? Where can I get 
more info?  

Thanks...Val