I even owned a Watusi horn bellied Dryad longbow many years ago that was drop dead beautiful, but it was very sluggish. I thought at the time that it must have been the added belly mass.
I remember those Dryad bamboo-backed, horn-bellied bows, they were great-looking bows. It’s interesting to know that they were slow, because they seemed very fast. The physical mass of this kind of bow is the main thing to consider. The heavier ones I made (98# and 70#) are fast, but that’s because they are strong relative to their mass. This bow is also quite heavy but has a lighter draw weight, so its performance may suffer. I have to make chrono tests. Making low-draw-weight bamboo-horn bows can be difficult, although "Simk" has succeeded at this very well.