Experience with Metzeler Cruisetec:
The feeling of driving was immediately different. Suspension on a normal road was like much stiffer and harder, but it is easy to get used to it.
On the sides, the compound is again noticeably softer, and in corners in higher gradients I had the feeling (not necessarily the reality) as if the rear wheel was gently drifting, but very controlled and not unpleasantly so.
In the rain I didn't notice any unexpected and unwanted behaviour. I drove in the pouring rain on the highway, sometimes even at 150 km/h, the tyres kept the track without hesitation. I was of course quite careful in the curves on the next narrow road, but I never had a bad feeling there either.
I don't know how long they'll last. Avon in the most frequent custom setting of ABS Road, MAP Road, TC Rain have given me more than 25000 km, two sets in a row. So far I have no complaints, the tyres are very good and give a feeling of confidence.