Your milage and experience may vary.
I'm on the opposite side of this spectrum.
My riding style: mainly for commuting. I push a bit in the twisties, keep up with some, but never too aggressive. I'm really progressive on the throttle and brakes, tend to engine brake (plus light brake) and carry over speed throughout the corners. I learnt that braking actually wears the tires out the most, not accelerating.
I managed to get 8K+ miles on the original K3 rear (11K+ miles front)... and 13K+ miles on Pilot Powers 1 rear.
In my experience... the K3 will go flat and you can feel it. The Powers on the other hand, resisted it really well. I like the transitional feel on the Powers better and will maintain it pretty much until it shows the second layer (yup, way past replacement time).
The K3 feels more like what a track tire I guess... very grippy in the beginning and throughout the mid-life. But will show reduced traction and profile feel when worn out.
I've always liked how sticky the Metz feel... also comparing to the previous M1 (on my SV) and M3 (on my K1200R).
I had a great experience on the Roadsmart 1 (K1200R). It didn't feel as grippy as the M3, which later on I found it was more of the side wall feel (it was a harder tire with stiffer walls). Once I got used to it, I had no problem going faster on them. Note: it was the only set of tires I've used so far where I worn out the front before the rear.