I just installed the pizza pan separators on my '06 Escape yesterday and I am VERY pleased.
According to my Scangage, mileage went up about 3 mpg, to 36 mpg on level ground at 50-55 mph, this is with 2wd, V6 and automatic trans, extended air dam, vortex generators on rear (top and sides), removed luggage rack and upper grill block(black duct tape). I expect to do better yet using more hypermiling tecniques. Chumly