Guess what? Back in the day no one got the projection in sound and resonance of modern coated Ambassadors. We got round, mellow and melodic tones. Nothing wrong with your preferences of course, but to me the Evans '56 Calftones seems much closer to sound of the real calfskin heads I was playing in the late '50s to early '60s. Like almost everyone else back then I moved to mylar for the practicality and the cost, but from the very outset I realized there was a price to pay in the quality of the sound. Some compare the Calftones to the Remo Fyberskins, but to my ear they are far superior and look more like the real thing as well.
I agree with your assessment. But playing today's music with louder volumes, for me coated ambassador or emperors work better. I play more blues, funk, classic country stuff with a few cover bands. I'm no heavy hitter by any means.. I just can't seem to get a sound that I like out of them. I shouldn't say "like." I'll say I can't get a sound that I prefer. They aren't terrible, they're just not for me.