Overall I really like the air-liner on my road bike. on the road bike it is primarily for safety so that if a tire tears and the sealant can't fix it, I don't get stuck or lose control (hopefully). These were really challenging to put on. Don't bother taking a spare inner tube because you won't get the tire off in a reasonable way without the included tool. they only add a few grams of weight but are worth the extra $ and grams because of the margin of safety they add.
I am an avid amateur cyclist I do not race but I live in the foothills of the Blue Ridge Mountains and ride a lot of technical descents at high speed. These tires are smooth, fast, and sticky. I have been riding them for two years and have yet to suffer a flat despite riding the morning after heavy storms with debris all over the road. I do agree with the previous assessment that they do delaminate. However that is happening close to the end of the lifespan of the tire in my experience. I would give them five stars if they didn't delaminate at all but it is kind of like a warning to check out tire tread if your not a maintenance freak. These are not commute tires they are made for sport riding and racing. It is my experience that they should be changed every one thousand miles or less if you are pushing the limits constantly. I personally love them and will continue to ride them for the foreseeable future.
I use these tires for road riding, training, and racing. Recently upgraded to these and so far no complaints. I have only ridden them approximately 350 miles, but in that was a few 50+ mile rides where many others seemed to get flats. Very low rolling resistance and very confident in corners.
I ride a fitness bike daily on a combination of paved roads, gravel roads and natural surface trails and these tires devour everything I throw at them. Fast and quiet on paved roads, they also provide ample traction and stability on unimproved surfaces.
To top it off, they are resistant to flats and last for several thousand miles of demanding cycling. I highly recommend the MICHELIN PROTEK CROSS 700C TIRE for those who ride hard and fast on multiple surface types.