I've used a pac saw like this one for 33 years. The blade is stout enough for elk ribs and vertebrae. Mine could use a sharpening. But I've never cared for the leather sheath--too heavy.
If I were to get another for hunting I'd get a folder like this:
http://www.cabelas.com/product/SILKY...8.uts?slotId=2
The bright colored handle is a plus.