Originally Posted by TejanoTrackie

Actually, (semi) horizontal dropouts are better for road use, because they are angled the same as the rear brake, so you don’t have to re-adjust the brake pads everytime you move the rear wheel in the dropout. It also makes it easier to remove the rear wheel, especially if you have a rear fender. The advantage of track ends is that they are longer than road horizontal dropouts, allowing a wider range of gear changes on the track without having to add or remove links from the chain.