Digital BW, The Print

Hello All:

I am thinking of buying a C86 and the MIS EZ Inks to get started in 
quality B&W printing, I have a few questions:

1.) Will this system clog if prints are not made for a while?  How 
easy is it to clear the nozzles?

2.) This will be a dedicated B&W printer, I'll buy it new and not 
load color inks.  However, I would like to switch between the warm 
and neutral tones, is this possible?

3.) All the info I have read says you can send a B&W image or a 
color image to the printer.  Is there any differance if you convert 
to grayscale first?

Thanks in advance!

Kevin