Tapers and especially crowns are sought after for handles on frontier style knives. Small crowns are a preferred handle for sgian dubhs.
While it is a minor problem that is rarely enforced, most states prohibit the sale of any white-tail deer product. You might want to call the game and Fisheries Dept. and check about selling sheds and using them for knife handles. Thousands of knives have been sold with white-tail antler handles, but every once in a while someone gets fined by a zealous game official at a show. I even heard a seller at a rendezvous was busted for selling white-tail jerky.
The commercial antler sold for knife handles is from other deer species, and mainly from farmed animals.