I autocross (but not in this car) so I am on the extreme end of spirited driving.
The Ecopias have great performance on dry and wet pavement and feel more like a performance summer tire. The sidewalls are extremely stiff so steering responsiveness and cornering stability is guaranteed. The con to the stiff sidewalls is that the tires are pretty noisy and can be bumpy if you drive a lot on poor roads. It iced over for a day last year and the tires did a little less than OK. The Ecopias had about 40% tread left when they were used in the icy conditions.
Traction in wet and dry conditions have stayed fairly constant throughout the tires life. I have about 1/16 to the wear bars now and the tires are just now starting to hydroplane in moderately wet conditions. These are the most consistent tires I have ever owned.
I was hoping to get 40,000 miles out of the tires, but I will be lucky to get 35,000 miles. A normal driver will be able to get much more mileage, but I think it would be tough to get the rated mileage out of them.
The tires feel the best with 35-37 psi cold and did have a 1.5 mpg average increase over my last set of tires (Dunlop Direzza Star Specs). These tires have pleasantly surprised me.