Digital BW, The Print

Paul's workflow for my 1160 indicates I should work in the sRGB color 
space, but what about the Grayscale color space? Should I create a 
custom gray space for WYSIWYG like recommended for Piezography? 

If I do that, I have the problem of compatibility between 
systems/drivers. I have a lot of images made for printing in 
Piezography in a custom greyspace. Since I'm now working with two 
quadtone printers and ink systems, and since I will probably be 
changing inks and systems over the years, maybe it would be best to 
just settle on a standard greyspace and then use correction curves 
for each system.

If a standard space is the answer, what should it be? And how should 
the monitor be calibrated? Jon Cone is adamant that the space should 
be gamma 1.8 and that the monitor should be calibrated to gamma 1.8. 
I find that way too flat compared to my prints. What's everyone else 
doing?