vCo2v
You are taking about 2 very different things, "D" shaped is the cross section nof the bow limbs and full compass is the shape of the arc at full draw, A bow that has been made full compass will give you better performance as the whole of the bow is being used to pack energy, where a Victorian style bow with a riser for a handle only uses the limbs themselves and not the handle area.
Also a well mae full compass bow will not give any hand shock at all.
Cheers
Steve