Please take the words with serpentine water channels out of your verbal description. That phrase described the tread on the tire which preceded one. We have a set of both tread patterns, the older serpentine pattern and the newer iron file pattern. We have found them both to be durable, comfortable, and fast on my 29er and our road tandem for crushed limestone trails and pavement.
Have the 42s on a steel gravel rig that I use for commuting. The infrastructure where I live is pretty bad infrequent bike lanes, roads are falling apart, and lots of sharp debris. These tires are a nice middlepoint between speed and reliability. 1,000 km with no flats, but they do feel noticeably sluggish (albeit compared to Conpass Snoqualmies). CXed em number of times too fine on hard packed singletrack but it got ugly on the sand and roots and rocks.
Even on my commuting bike, I like to go fast - and these are great in that regard - rolling resistance is low, and they feel fast and reasonably light. They are billed as a commuting tire, but they feel like a performance tire - with a good deal of comfort (mine are the 35mm width - nice and cushy). And yet they do offer some level of flat-protection. I tend to have pretty good luck with flats anyhow, but I've not had any so far with these, and I know I've ridden through a fair amount of broken glass. I also like the reflective sidewalls, since my morning commute is still in the dark. At the regular price, they're a decent value. Got mine on sale, and they were a smokin' deal.
Please remove the words serpentine water channels from your verbal description. Those words refer to the previous generation of this tire. The current generation has a steel file treat pattern as shown in the photo. We have both generations and really enjoy them on our road tandem and my 29er both on pavement and crushed limestone trails.
The city tire I have been waiting for. Have 500 miles on the 42s, and couldn't be happier. Fast and smooth rolling. Only one little cut in the tread after rolling through a broken MD 2020 bottle, but no flats.
Both the title and description match the Conti Sport Contact II tire. The reality is that the product is the older version Sport Contact I. The photo is of the SC I. Which should I go by photo or description.