Thanks. Subsequent to my original post I tried a print using the profile for Epson Premium Glossy with good results. Nonetheless I'll try my next print using the Luster profile.
You're absolutely correct. The Epson Glossy profile is almost identical to the Luster profile. I've never done side by side comparisons, but I do know they are very very close. However, I would advise using the proper profile for each paper if possible. I'm sure there must be some almost invisible difference that would be noticeable only under very close inspection.
Glad you found the OFF button for the
Auto Black Ink Change.