I'm getting ready to do some serious profiles for the papers that I use on my Epson 3880. I have an i1 Pro arriving and will be using it instead of my ColorMunki to create the new profiles (the CM did a very good job using ArgyllCMS but I want to see if I can do better). My question is the utility of using the '-g' parameter in creating a set of gray patches. I do all my B&W printing using the Epson ABW print driver and have profiles for that driver that Eric Chan has created by reading a step chart of B -> W densities. Is there value of including a set of gray steps when creating a profile that will be used only for color printing on this printer? Thanks for any advice on this. Alan