If you are a purist, don't read any further.  If not, and you like mixed media, this might be of interest.  I am a fairly recent user of polymer clay but have found it gives me a solution to some problems.
1  Making eyes.  PC can be rolled into tiny balls that can be painted with acrylic.  I keep a selection of black and white balls in various sizes that I can use should the need arrive.  If you are more sophisticated you can make a cane with an eye pattern and cut off sections as needed.
2  Teeth.  It is very difficult to make incisors and projecting teeth in pm.  PC is easy and they can be implanted into the laminate or pulp.
3  Claws.  I always feel that wire covered with paper for claws or similar projections is a bit dangerous.  PC can be rolled to a very narrow diameter and pointed, curved or whatever.  These can be implanted into the paper and the sharp end lightly sanded if necessary.  Premo Sculpey retains a slight flexibility so that even in very small sizes, it will not snap.
4  Surface decoration.  If you want to give a subtle, strong surface with a lot of detail, PC may be the answer.  I am finding this ideal for a carapace (a tortoise or turtle shell).  After a coating of PVA, it will hold very well.  You must make sure that the object you are coating has nothing in its armature that cannot be heated to 135C, which is the curing temperature for PC.
DavidO
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