I've read that too, Rob.
I've always wanted to build a Yew warbow, but it wouldn't do me any good as those things ran (as I understand it) anywhere from 90 to 120+ pound (give or take)... I'd never be able to string it, or pull it if I ever did get such a thing strung. They are a very interesting bow to be sure, as is the arrow tips designed for specific usage against all sorts of enemy armaments.