These tires are pretty nice on the road considering that they are heavy and bullet proof. They feel smooth although you never forget that you are pushing around thick, rigid bricks of rubber. That sounds like a contradiction, but that's how these Sector 28's roll.
I bought them for flat-free winter riding and didn't expect them to disappear under the bike. So that isn't where they disappoint.
Where these fall short is in the tubeless setup. As with anything tubeless, this might be rim specific - I installed these on DT Swiss R460 rims. For me, with these rims and a good compressor, I couldn't get the tires to seat without sealant. This was a first for me. I usually install the tire, seat without sealant, add sealant through the valve, reinflate with floor pump (or hand pump or compressor). This approach saves me the mess of sealant leaking/spraying everywhere while the bead snaps into place.
The Hutchinson Sector 28's did not seat without sealant. They didn't even come close. To get the tires to seat I had to add sealant, spin/twist/finesse the wheel while inflating with compressor. Before the bead started to snap into the rim, sealant was everywhere.
Since so much of the sealant was on my hands, the sidewalls of the tires and the floor, the tires went soft overnight. I had to add more sealant and reinflate. Though the second round of sealant has held, I am concerned that I had to use the compressor to reinflate after topping off the sealant. My worry is that if I get a puncture, even if the sealant stops the leak, the tire bead my become unseated and the advantage of tubeless will be lost. I also have no idea how much sealant is sloshing around in the tire - which might contribute to the ok/not great ride they give.
I'll keep these on for the winter - unless they come unseated on a ride and I'm stuck on the side of the road in freezing weather adding a tube to a tire full of messy sealant - and get rid of them as soon as possible in the spring.