I'm building one now, coincidentally. Its a 55" reflexed stave that I've had a couple years. I didn't do a bend test; instead I decided to just screw around with it to practice some new techniques that I want to try, namely, concave belly and a new way to sinew.
Despite the questionable belly scooping, I think the wood has great potential just because of the tillering abuse I've put it through and yet no sign of set. In the future I'll use orthodox technique to test its true potential.
So here's pics of it before heat treating, flipping tips, or sinewing. The last pic shows the results of all that and sinew was just applied yesterday so it will be awhile before bending occurs.......