I have driven around 3000km in the plains of northern Italy with a Polo Aw1 Tsi 95cv, with average temperatures of around 20-22°C.
What I immediately noticed on dry roads is a fairly wide steering dead spot and significant understeer, even at low and moderate speeds. What left me most perplexed is the inconsistency of the steering when cornering (even when compared to the Bridgestone Blizzak I just removed): I don't have a good perception of the contact between the tire and the asphalt, the steering is not very precise, and I can perceive a sensation of floating.
The steering directionality on straight roads is also decidedly less consistent than summer tires (Bridgestone Turanza 001), and even compared to winter tires.
The positive aspect compared to the previous summer tires is the softness in following the bumps in the asphalt that allows for good control.
Overall I think that these All Season Contact 2 are not very suitable for the summer climate of the flat Italian areas, where temperatures easily exceed 35°C, and where temperatures are steadily above 15°C for 8/10 months a year.
In these situations I think that a certain amount of attention is needed when driving with these tires.
I wouldn't buy them again, because already at 20°C I find them unsafe when cornering and braking. I think I'll test them a bit more now to see how they behave as temperatures rise, but I'll probably replace them with summer ones before the high temperatures arrive.