Digital BW, The Print

I'm intrigued by the ultratones from what I've read.  I have a few 
questions and haven't been able to find answers in the archives 
(maybe I'm just not a good searcher).  Hopefully someone can help me 
out here:

(1) Does use of the ultratones in the 2200 require use of special 
software?  I'm really put off (OK, intimidated) by all the stuff I've 
read regarding various complicated procedures for most of these 
alternative systems (e.g., "you just need to create your own custom 
ink curves to linearize the driver response" -- I have no idea what 
that means and would rather not have to).  When using the ultratones 
in the 2200, do you print with the standard epson software; some 
special MIS software (at an extra cost, presumably); or some 3rd 
party software like this GimpPrint thingy I've read about?

(2) The reason I have a 2200 is to be able to print color and black 
and white on the same printer.  When you pop out the MIS cartridges, 
do you have to run some special or complicated cleaning routine to 
get all the MIS ink out of the printer head before going back to the 
normal epson cartridges?  Or do you just use the epson cleaning 
routine that's available in the epson driver?

(3) I currently have ImagePrint 5.5 and have been the most pleased 
with that for black and white printing in comparison with other 
software I've tested (QuadTone RIP (which I admit I didn't fully 
understand), Epson's RIP for the 2200, black only printing).  Will I 
see a noticeable improvement over ImagePrint by using the MIS inks?  
It seems like the answer must be yes (since I'd be using 7 shades of 
gray ink instead of 2 shades of gray ink plus color ones as with 
ImapgePrint) but I'm interested in anyone's realworld experience with 
the two.

(someone mentioned a comparison in an earlier message, but I can't 
find it now)

Thanks!