Odd that you would say that. The Martin fletching jig is made out of plastic, one of its advantages over the Bitzenberger is that glue does not stick to it. Must be made out of a different kind of plastic than the Bearpaw.
You might want to consider the Martin J8, $39.99 at 3 Rivers. It does everything the Bitz does, and also allows you to micro-turn the fletch position if you're not quite happy with the fixed positions. That has been one of my complaints of the Bitz, as I've ordered replacement indexers, and they don't line up in exactly the same location as my old ones do. The Martin is not constructed quite as solidly as the Bitz, but it works well enough if you screw it to a plank of wood.
Not saying that the Martin is any better or worse than the Bearpaw, as I have no experience with that, just another option.