We would all at least have to change our dietary habits and could not wait with folded arms until somebody comes and provides for a more humane way of slaughtering. It is demand that defines production, also in the case of meat. Relinquishing meat consumption would therefore produce an immediate decrease in the number of killings. Right now, leather is the most problematic material for any vegetarian. So renouncing to leather would only rise the price of meat, but not have much of an effect upon the number of killings.
Furs are an unnecessary luxury.
Even if this aim is not attainable in one single leap, we should keep the aim in view, then the intermediary stages come by themselves. Nr. 18, by Dr. med. Covering the protein needs.