I wanted to give a progress report since it's been about 5000 miles since I replaced the stock Ecopias with Nokian's eNTire.
The traction and handling are excellent, these seem to even be a bit quieter as well (although that may be because the Bridgestone tires were pretty well worn at 27k miles). I have had one puncture but the tire held enough air to allow me to get to the tire place for them to repair it. The tread appears to be holding up well, and these tires do have an 80k mile tread warranty, which is good.
On the other hand, I'm very disappointed in the rolling resistance of the eNTire. I used to regularly exceed 5 Mi/KWh on the Ecopias, now I'm lucky to break 4.5 over the course of a week. This is with inflating both tires to 42 psi, btw.
So as they say, YMMV...