My recent experience with eco tires is a bunch of ePrimacy, not on the same car.
Although the 6Q behave as designed on dry roads, I find them noticeably worse than eprimacy everywhere.
The positives: Road noise is very good and highway driving is pleasant on good tarmac, good centering. Consumption is good. They drive well on gravel/dirt and can take a bit of torture with rocks (if that's your thing).
They can also handle the S.European summers, did some 400+km trips @130km/h under 40C ambient, didn't notice anything weird.
the bad:
The steering feel is bad, I have a floating sensation.
At the slightest drop of water tires become dangerous.
On bad city roads, ABS kicks in constantly (dry or wet).
I am swapping them out asap, won't drive a second winter on those. imo much worse than eprimacy and even the latter are not good tires (all eco touring tires annoy me).