I've used it in the past and haven't had any problems. One thing that I do different is to gouge out as much of the pith as possible. Usually, the weathered antler has fairly rotted pith that's too weak and crumbly for my tastes, so I gouge it out and pack the cavity full of loctite 202 (?) stick epoxy. Ram the tang home and it pushes the epoxy into all the nooks and crannies, adding strength to the potentially weakened antler and giving you a perfectly-fitted mortise for your tang. You need to coat the tang with vaseline or the like so it doesn't stick to the epoxy.
Stronger handle and ready to finish however you like.