It is a bit of an illusion looking like the limbs outside the grip were bending more, and that the bow should have bad hand shock with this shape of limb. What is really happening is the tips/outer limbs really have to move the farthest like on any bow, but its amplified here with this limb shape. basically putting more energy from a longer bow limb by shortening it up a touch by first deflexing just outside the grip, and reflexing the tips..
If you sight down the limb when its being drawn it moves just like a straight bow limb, from the tips in. It just has more stored energy in this profile. It's similar to some of the modern glass hybrids, but the concept is old. Classic examples are the ancient Egyptian bows were crafted in this same manner. Jaroslav I think posted a few european models as well..
The Degame bow is only 66", and with a 5" grip had limbs of a 61" bow so I amplified the curve closer to the tips which seems to work better on the shorter bows and on the longer bows I like the curve in the middle of the limbs..
Rich