Grips well but maybe too well. Having a Velodyne and power meter noticed at least a 25-40watt increase in resistance compared to Vittoria's indoor tire. This was before recalibration. Also, increased stickiness reduces wheel inertia., so you will find your extensor muscles working overtime if that's what you want...

Because I was in tune with the Vittoria setup my routines had to change as well as gearing for routes and etc. Not a fan of this when you are expecting y and you get x. Also, the inertia load changing so much my quads felt overworked despite having a pretty good pedaling action (many years of practice). It also leaves a tacky residue on roller which then transmitted to my new Vittoria tire. Yes, that bad, had to get back to what worked.

If you want sticky, this is it. If you want an aggressively crank loaded feel, this is it. If you want a more realistic ride quality this is not for you. If you do switch to another tire after this tire, take a look at the roller first, you may have to wipe it down otherwise the drag demon may appear again...