I take warren's point seriously, that if trim looks like something rare, it must be made clear if it is something other than it seems. On the other hand, I would honor a carver who makes it clear what the other material is and let's the buyer be the judge. If someone does a titanium band and identifies the material, or some specialized plastic or other off-brand material, that can be creative. The issue for me would be, are they up front about it? Let me see how it looks, and if I like it, find out how it wears and lasts, and I'll take the gamble. But let me know up front. If someone at a pipe show or club is "deceived," thinking it is one thing and not the other, unless they ask, I don't care.