Ya know, in 40+ years of wearing full mask, all leather, and seal skin sporrans NO ONE has ever said anything. My wife is a life-long member of the FCS (Fur Coat Society) and no one-- not in Europe or the Americas-- has ever said (or done) anything even remotely threatening.

Generally, I feel that too many people spend far too much time worrying about things that, in extremus, might happen if they wear a fur sporran with their kilt rather than focusing on those things that will happen if they wear white socks with their kilt.