That's going to be my next set of tires. I heard good things about these tires. I totally agree with you, they don't get much love here. But I like them.
I hear it all the time when the engine is cold, regardless of time of day. Once the engine warms up, it's hard to replicate. I hear it first thing in the morning, and after work. But if I'm running errands I do not get the chirp when the A/C engages.