I love Ipe. I have backed it with Boo and with hickory, both worked great. Ipe is so dense you can make scary tiny tips, and have zero hand shock, and blazing speed. The problem is not seeing grain and rings the same way you are used to seeing Osage. The only trouble I have had with it, was a break at a swirly grain pattern that was all but hidden under the surface of the belly. But seriously how many other woods have you broken bows too?