I just purchased my first pair of CX race tubulars (Ksyrium Tubulars). Since they are strong, I could use them as a train/race wheel. I was curious if most people trained on their race tubulars or just trained on training clinchers with cheaper tires. Since the tubular tires are expensive, I can see why someone would have separate training/racing wheels. However, I'm not sure how much my Grifo Challenge tubulars would wear down from once or twice a week training for 1 hr during an 8 week season. What do most people do who own race tubulars? Do you have separate training clinchers or just train in tubulars since the wear isn't that much?