Can you summarize the "brief rave" - and do you mean electrically conductive or acoustically? Obviously you'd want the best acoustic conduction to the top (and I assume we're talking about an acoustic guitar saddle) but electrical conduction wouldn't make much difference and I suspect that the carbon in the saddles makes them somewhat conductive but probably in the kilo or megaohm range. If these are electric guitar saddles and you want to make them conductive to limit hum and pop the probably resistance should be adequately low but you can alway buy conductive paint such as is used to sheild electric guitar cavities or the more conductive paint used to repair printed circuit boards and get a less than 10 ohm (guesstimate) resistance which would take care of any "pop" etc.,
Thanks Rob, I saw them mentioned in a forum a long time ago , the player was talking about improvements to his guitar , I think he was misinformed and thought his saddles were electrically conductive .Thanks for your input.Len
You're welcome - and as I mentioned I'm pretty sure that they are at least somewhat electrically conductive - take a DMM set on the highest resistance range and find out. I would do so but I threw away the GT saddle I was using on my Martin many years ago as it wore quite quickly with my heavy percussive style (I use Fender nitrocellulose "extra heavy" picks and can easily kill a set of strings during one stage set).