Increased risk of injury in a crash. A good place to start is to install them at 45 degrees. If you find your hands are too far forward, then you may want to rotate them up. And if you feel their too close, try rotating them down. If your bar ends get too steep then they look goofy and pose an larger risk of causing injury.
Position is all about personal feel.
The two just don't go together. If you do, people will laugh and point. Get the latest mountain biking news and tips in your in-box. All rights reserved. Do not duplicate or redistribute in any from.