Just checked some old pictures and the Apex springs I had in the past were also progressive on the front as well as on the rear.
Still, I like how the handling of the car is at the moment. The Ahmed springs are much stiffer than the Apex springs I had before, so they don't need to be progressive to reduce dive or roll. Though I guess the car could be more comfortable with progressive springs. But for the handling I think the Ahmed springs are good.