Was on an S5 fligh with one of these earlier today. I actually showed up at the airport expecting a CR7 given the seat map And realized something was off when the E170 was parked at the gate. The plane couldn't have had but a few cycles with the new interior as it was still clean and the seats showed nO sign of wear.

I can't speak for EC config, but I did notice that row 4 (Y) was closer to the back of my seat than I recall on other E170/5 configurations.