Yes, my bad. Forgot Ektachrome was the E-6 name. It's been nearly 15 years, cut a girl some slack. :) Generally, anyone using slide film of any chemistry knows that if they bring it to a 1-hour lab they're getting C-41. Whether they shoot for it is their business. I never ran slide film through my machines because I was a testing nut (and got one district photo supervisor pissed at me for that refusal), but a lot of the old heads would do it for customers on the expectation that doing it a few times a year wouldn't hurt things too badly at the rate they changed chemicals.