I used to ride Vittoria and Dugast sew-ups, Vitt and Veloflex clinchers for road, and Geax for MTB almost exclusively. After having tried many (not all) other major brands/models, (Conti, Gommitalia, Hutchinson, Michelin, Panaracer, etc.) I settled on those as the best for my applications. I still think the Dugast's were/are one of the the top tubular's ever made, but they're very hard to find anymore. (And I have never had the chance to try Vredestein's fairly recent sew-up, but I'm getting ahead of myself...)
Anyway, then I got a pair of Vredestein Slizer & Grinder MTB tires just for the heck of it, and I loved 'em. They were the equal to or better than the Geax', even the casings were as well-thought-out as Geax was. So, I put a pair of Vredestein S-Lick's on my MTB for road riding until I could buy a new road bike. They were much better than any of the other MTB semi-slicks or touring/commuter tires I had used to that point.
After I stopped using sew-ups entirely, I decided to try Vredestein clinchers for road and CX. And wow! were they great. The Fortezza Road, Tri-Comp, and Campo (cyclocross) have excellent ride "feel" and handling characteristics, excellent traction, and very low pinch flat or puncture flat occurance.
As far as wear characteristics, well, long tire wear is not one of my priorities, though I do expect at least reasonable life from any tire. The Vred's are about average I'd say in the wear department. There are other's that will last longer, and other's that will wear out quicker.
But there is always some kind of trade-off when it comes to tires: for one thing, you can't have very long wear and expect to have the greatest grip at the same time, because the current rubber compounds can only compensate so much for both things at the same time. I'd rather have to replace a tire a bit sooner and have very confident traction/handling, than to have a sketchy grip with long wear. What good is saving some money on tire replacement if you have to change the way you ride or are losing grip and crashing? I know, I've had the experience and it ain't much fun!
So for all of the reasons above, I recommend where possible to every cyclist I know - roadie, CX'er, commuter, etc. - to try the Vred's, (except with MTB'ers because AFAIK Vred has gotten out of that end of the market). I haven't yet had one person come back and say they were not happy with the results.
YMMV!