Digital BW, The Print

Carolyn is right. Color managed workflows, in my experience, are cross platform. You can't avoid color management any 
more, if you are working in Photoshop, you are being managed whether you like it or not so you might as well learn it. 
Actually, it's essential, but there are some pitfalls to avoid so it all works.
You must avoid letting the Epson driver inject it's problems into the mix. With quads, using separations, you want all your 
control in photoshop to be transferred to the inks without further mixing. Considering you can't get around the drivers 
injection of K ink and the removal of other inks in the process you already have problems, you don't need more. The only 
way to directly control C, M, and Y inks (until their combined percentages force K) is to stay in no color adjustment in the 
driver.
You also must have your destination space be "same as source" or there will be color managed corrections you don't need 
or want. The other issue is "Printer Color Management". C. D. Tobie, who I notice has been on this list a bit, just posted about 
it on the Colorsync list. It does different things on different platforms, and is very misunderstood. I think, on the PC, it even 
does different things with different drivers, and different versions of PS. There is a lot of info out there in the archives of 
other lists.
By making sure your source and destination spaces are clearly defined and the same, making sure PCM is out of the 
picture, driver settings are always consistent, and no color adjustment is always used in the Epson driver, results should 
be cross platform. I've produced workflows on the Mac for people on PC's without a problem. These curves for Martin's PC 
were created on a Mac.
The PCM issue needs to be addressed though, if I remember right in PS 5.x on a PC it actually had to be checked or the 
monitor profile would be used for source behind your back. Could have been the reverse, but I seem to recall it was 
opposite for the Mac.
Confused yet?
Tyler