I've had the quadboss hippo hands on my S10 for about 9k miles now, and have found that they do not hold up in the long run, particularly with constant highway force winds. They definitely helped while they were intact. Riding through Tennessee, Illinois, Kentucky, Missouri, and Arkansas just before Christmas, I ran into some very strong winds - 40-50 mph gusts for an extended period of time. At one point, my gas mileage was in the high 20s because of the wind (I was running my usual 75-80 indicated). The QB hippo hands were flapping mercilessly in the wind and lost a good bit of their rigidity, which made them flap more. Shortly thereafter the stitching on the hems started to come out, and it wasn't long before the lining and then the outer fabric began to fray and come apart. By the time I went through Texas and Oklahoma, they were looking substantially worse, and I found that I would occasionally get my left hand between the lining and the outer layer. This is not optimal when you need to reach the clutch in a hurry.
I realize that these were somewhat extreme conditions, and that the mitts would probably still be fine if they hadn't been exposed to essentially 120+ mph winds for 300+ miles. I would love to get a pair of the real hippo hands from Canada, but there is not enough of the winter left to make it worthwhile. Pics attached. Sorry the left side is blurry for some reason.
Chris